The Collaborative International Dictionary of English v.0.48:

Bat \Bat\, n. [Siamese.]
   Same as Tical, n., 1.
   [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Bat \Bat\, v. t. [imp. & p. p. Batted (b[a^]t"t[e^]d); p. pr.
   & vb. n. Batting.]
   To strike or hit with a bat or a pole; to cudgel; to beat.
   --Holland.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bat \Bat\, v. i.
   To use a bat, as in a game of baseball; when used with a
   numerical postmodifier it indicates a baseball player's
   performance (as a decimal) at bat; as, he batted .270 in 1993
   (i.e. he got safe hits in 27 percent of his official turns at
   bat).
   [1913 Webster +PJC]

The Collaborative International Dictionary of English v.0.48:

Bat \Bat\ (b[a^]t), n. [OE. batte, botte, AS. batt; perhaps fr.
   the Celtic; cf. Ir. bat, bata, stick, staff; but cf. also F.
   batte a beater (thing), wooden sword, battre to beat.]
   [1913 Webster]
   1. A large stick; a club; specifically, a piece of wood with
      one end thicker or broader than the other, used in playing
      baseball, cricket, etc.
      [1913 Webster]

   2. In badminton, tennis, and similar games, a racket.
      [Webster 1913 Suppl.]

   3. A sheet of cotton used for filling quilts or comfortables;
      batting.
      [1913 Webster]

   4. A part of a brick with one whole end; a brickbat.
      [1913 Webster +PJC]

   5. (Mining) Shale or bituminous shale. --Kirwan.
      [1913 Webster]

   6. A stroke; a sharp blow. [Colloq. or Slang]
      [Webster 1913 Suppl.]

   7. A stroke of work. [Scot. & Prov. Eng.]
      [Webster 1913 Suppl.]

   8. Rate of motion; speed. [Colloq.] "A vast host of fowl . .
      . making at full bat for the North Sea." --Pall Mall Mag.
      [Webster 1913 Suppl.]

   9. A spree; a jollification. [Slang, U. S.]
      [Webster 1913 Suppl.]

   10. Manner; rate; condition; state of health. [Scot. & Prov.
       Eng.]
       [Webster 1913 Suppl.]

   Bat bolt (Machinery), a bolt barbed or jagged at its butt
      or tang to make it hold the more firmly. --Knight.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Bat \Bat\, v. t. & i.
   1. To bate or flutter, as a hawk. [Obs. or Prov. Eng.]
      [Webster 1913 Suppl.]

   2. To wink. [Local, U. S. & Prov Eng.]
      [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Bat \Bat\, n. [Corrupt. from OE. back, backe, balke; cf. Dan.
   aften-bakke (aften evening), Sw. natt-backa (natt night),
   Icel. le[eth]r-blaka (le[eth]r leather), Icel. blaka to
   flutter.] (Zool.)
   One of the Chiroptera, an order of flying mammals, in which
   the wings are formed by a membrane stretched between the
   elongated fingers, legs, and tail. The common bats are small
   and insectivorous. See Chiroptera and Vampire.
   [1913 Webster]

         Silent bats in drowsy clusters cling.    --Goldsmith.
   [1913 Webster]

   Bat tick (Zool.), a wingless, dipterous insect of the genus
      Nycteribia, parasitic on bats.
      [1913 Webster]

WordNet (r) 3.0 (2006):

bat
    n 1: nocturnal mouselike mammal with forelimbs modified to form
         membranous wings and anatomical adaptations for
         echolocation by which they navigate [syn: bat,
         chiropteran]
    2: (baseball) a turn trying to get a hit; "he was at bat when it
       happened"; "he got four hits in four at-bats" [syn: bat,
       at-bat]
    3: a small racket with a long handle used for playing squash
       [syn: squash racket, squash racquet, bat]
    4: the club used in playing cricket; "a cricket bat has a narrow
       handle and a broad flat end for hitting" [syn: cricket bat,
       bat]
    5: a club used for hitting a ball in various games
    v 1: strike with, or as if with a baseball bat; "bat the ball"
    2: wink briefly; "bat one's eyelids" [syn: bat, flutter]
    3: have a turn at bat; "Jones bats first, followed by Martinez"
    4: use a bat; "Who's batting?"
    5: beat thoroughly and conclusively in a competition or fight;
       "We licked the other team on Sunday!" [syn: cream, bat,
       clobber, drub, thrash, lick]

Moby Thesaurus II by Grady Ward, 1.0:

442 Moby Thesaurus words for "bat":
   Angora goat, Arctic fox, Belgian hare, Caffre cat, Indian buffalo,
   Kodiak bear, Virginia deer, aardvark, aardwolf, agate, alpaca,
   anteater, antelope, antelope chipmunk, aoudad, apar, armadillo,
   ass, aurochs, bacchanal, bacchanalia, bacchanalian, badger, bag,
   ball, bandicoot, bang, baseball bat, bash, bassarisk, baton,
   battledore, bauble, bear, beating, beaver, beldam, belt, bender,
   bettong, biddy, biff, billy club, binge, binturong, bison,
   black bear, black buck, black cat, black fox, black sheep,
   blind man, blink, blocks, blow, bludgeon, blue fox, bobcat, bonk,
   booze, bop, bout, brown bear, brush deer, brush wolf, buffalo,
   buffalo wolf, bum, burro, burro deer, bust, cachalot, camel,
   camelopard, capybara, carabao, caribou, carousal, carouse,
   carpincho, cat, cat-a-mountain, catamount, cattalo, cavy,
   celebration, celerity, chamois, checkerboard, cheetah, chessboard,
   chevrotain, chinchilla, chipmunk, chop, cinnamon bear, clap, clip,
   clobber, clout, club, clump, cockhorse, coldcock, compotation,
   coon, coon cat, cotton mouse, cotton rat, cougar, cow, coyote,
   coypu, crack, cricket bat, crone, cue, cut, dash, deal,
   deal a blow, debauch, deck, deer, deer tiger, dig, dingo, dint,
   dog, doll, doll carriage, donkey, dormouse, drab, drift,
   drinking bout, dromedary, drub, drubbing, drumming, drunk,
   drunken carousal, echidna, eland, elephant, elk, ermine, escapade,
   eyra, fallow deer, ferret, fetch, fetch a blow, field mouse,
   fisher, fitch, fling, flying phalanger, foumart, fox, fox squirrel,
   fusillade, gad, gait, gallivant, gazelle, gemsbok, genet, gewgaw,
   gimcrack, giraffe, glutton, gnu, gnu goat, goat, goat antelope,
   golf club, gopher, grizzly bear, ground squirrel, groundhog,
   guanaco, guinea pig, guzzle, hamster, hare, harnessed antelope,
   hartebeest, hedgehog, hippopotamus, hit, hit a clip, hobbyhorse,
   hog, horse, hyena, hyrax, ibex, jab, jack-in-the-box, jackal,
   jackass, jackrabbit, jacks, jackstones, jackstraws, jag, jaguar,
   jaguarundi, jerboa, jerboa kangaroo, kaama, kangaroo,
   kangaroo mouse, kangaroo rat, karakul, kickshaw, kinkajou, kit fox,
   knickknack, knobkerrie, knock, knock cold, knock down, knock out,
   koala, lapin, lark, lemming, leopard, leopard cat, lick, lion,
   llama, lynx, mace, mammoth, mara, marble, marionette, marmot,
   marten, mastodon, meander, meerkat, mig, mink, mole, mongoose,
   mooch, moose, mouflon, mountain goat, mountain lion,
   mountain sheep, mouse, mule, mule deer, muntjac, musk deer,
   musk hog, musk-ox, muskrat, musquash, nictitate, nilgai, nutria,
   ocelot, okapi, onager, oont, opossum, orgy, otter, ounce, ox, pace,
   pack rat, painter, panda, pangolin, panther, paper doll, paste,
   peccary, pelt, peludo, phalanger, pick-up sticks, pig, pine mouse,
   pinwheel, platypus, plaything, ploy, plunk, pocket gopher,
   pocket mouse, pocket rat, poke, polar bear, polar fox, polecat,
   porcupine, possum, potation, pouched rat, pound, poyou,
   prairie dog, prairie wolf, pronghorn, pub-crawl, puma, punch,
   puppet, quickness, rabbit, raccoon, racket, rag doll, ramble,
   randan, randy, rap, rapidity, rat, red deer, red squirrel,
   reindeer, revel, rhinoceros, roam, rocking horse, roe, roe deer,
   roebuck, rove, sable, serval, sheep, shillelagh, shrew, shrew mole,
   sika, silver fox, skunk, slam, slog, sloth, slug, smack, smash,
   smite, snap, snowshoe rabbit, soak, sock, sport, spree, springbok,
   squirrel, steelie, stoat, strike, strike at, stroke, suslik,
   swamp rabbit, swat, swiftness, swine, swing, swipe, symposium,
   takin, tamandua, tamarin, tapir, tarpan, tatou, tatou peba,
   tatouay, tattoo, taw, tear, teetotum, the blind, the sightless,
   the unseeing, thump, thwack, tiger, tiger cat, timber wolf, toot,
   top, toy, toy soldier, traipse, tree shrew, trinket, trot,
   truncheon, twinkle, urus, velocity, vole, wallaby, wallop,
   war club, warthog, wassail, water buffalo, waterbuck, weasel,
   whack, wham, wharf rat, whim-wham, whistler, white fox, whop,
   wild ass, wild boar, wild goat, wild ox, wildcat, wildebeest,
   wingding, witch, wolf, wolverine, wombat, wood rat, woodchuck,
   woolly mammoth, yak, yerk, zebra, zebu, zoril



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

BAT
       Baby Advanced Technology [board] (AT)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

BAT
       Bouquet Association Table (DVB)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

BAT
       Browser-based Application Toolkit (IBM, WWW)


Easton's 1897 Bible Dictionary:

Bat
   The Hebrew word (atalleph') so rendered (Lev. 11:19; Deut.
   14:18) implies "flying in the dark." The bat is reckoned among
   the birds in the list of unclean animals. To cast idols to the
   "moles and to the bats" means to carry them into dark caverns or
   desolate places to which these animals resort (Isa. 2:20), i.e.,
   to consign them to desolation or ruin.