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]