The Collaborative International Dictionary of English v.0.48:

Spout \Spout\ (spout), v. t. [imp. & p. p. Spouted; p. pr. &
   vb. n. Spouting.] [Cf. Sw. sputa, spruta, to spout, D.
   spuit a spout, spuiten to spout, and E. spurt, sprit, v.,
   sprout, sputter; or perhaps akin to E. spit to eject from the
   mouth.]
   1. To throw out forcibly and abundantly, as liquids through
      an orifice or a pipe; to eject in a jet; as, an elephant
      spouts water from his trunk.
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            Who kept Jonas in the fish's maw
            Till he was spouted up at Ninivee?    --Chaucer.
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            Next on his belly floats the mighty whale . . .
            He spouts the tide.                   --Creech.
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   2. To utter magniloquently; to recite in an oratorical or
      pompous manner.
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            Pray, spout some French, son.         --Beau. & Fl.
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   3. To pawn; to pledge; as, to spout a watch. [Cant]
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The Collaborative International Dictionary of English v.0.48:

Spout \Spout\, v. i.
   1. To issue with violence, or in a jet, as a liquid through a
      narrow orifice, or from a spout; as, water spouts from a
      hole; blood spouts from an artery.
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            All the glittering hill
            Is bright with spouting rills.        --Thomson.
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   2. To eject water or liquid in a jet.
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   3. To utter a speech, especially in a pompous manner.
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The Collaborative International Dictionary of English v.0.48:

Spout \Spout\, n. [Cf. Sw. spruta a squirt, a syringe. See
   Spout, v. t.]
   1. That through which anything spouts; a discharging lip,
      pipe, or orifice; a tube, pipe, or conductor of any kind
      through which a liquid is poured, or by which it is
      conveyed in a stream from one place to another; as, the
      spout of a teapot; a spout for conducting water from the
      roof of a building. --Addison. "A conduit with three
      issuing spouts." --Shak.
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            In whales . . . an ejection thereof [water] is
            contrived by a fistula, or spout, at the head. --Sir
                                                  T. Browne.
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            From silver spouts the grateful liquors glide.
                                                  --Pope.
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   2. A trough for conducting grain, flour, etc., into a
      receptacle.
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   3. A discharge or jet of water or other liquid, esp. when
      rising in a column; also, a waterspout.
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   To put up the spout, To shove up the spout, or To pop up
   the spout, to pawn or pledge at a pawnbroker's; -- in
      allusion to the spout up which the pawnbroker sent the
      ticketed articles. [Cant]
      [1913 Webster]

WordNet (r) 3.0 (2006):

spout
    n 1: an opening that allows the passage of liquids or grain
    v 1: gush forth in a sudden stream or jet; "water gushed forth"
         [syn: spurt, spirt, gush, spout]
    2: talk in a noisy, excited, or declamatory manner [syn: rant,
       mouth off, jabber, spout, rabbit on, rave]

Moby Thesaurus II by Grady Ward, 1.0:

278 Moby Thesaurus words for "spout":
   anabasis, ascension, ascent, avenue, babble, beak, belch, blab,
   blabber, blather, blether, blow open, blow out, blowhole, blowout,
   bond, bottomry, brash, break out, burst forth, burst of rain,
   burst out, carry on, cascade, cast forth, cataract, channel, chat,
   chatter, chute, clack, clamber, clatter, climb, climbing,
   cloudburst, conduit, debate, debouch, decant, declaim, deluge,
   demagogue, deposit, destroyed, dip, discharge, disembogue,
   disgorge, disgorgement, dither, door, downfall, downflow, downpour,
   downspout, drain, drain out, drencher, duct, egress, ejaculate,
   ejaculation, eject, elevation, elocute, emission, emit, empty,
   emunctory, eruct, eructation, erupt, eruption, escalade, escape,
   estuary, exhaust, exit, expatiate, expel, expulsion, extravasate,
   extravasation, falls, find vent, flood, floodgate, flow, flow out,
   flume, flush, font, force, fount, fountain, gab, gabble, gargoyle,
   gas, geyser, gibber, gibble-gabble, go bail, go on, gone, gossip,
   grimace, gush, gush out, gushing rain, gyring up, ham, ham it up,
   handsel, harangue, haver, heavy rain, hock, hold forth, hurl forth,
   hypothecate, impignorate, increase, jabber, jaw, jet, jump, leap,
   levitation, loophole, lost, mortgage, mount, mounting, mouth, mug,
   natter, opening, orate, out, out-herod Herod, outburst, outcome,
   outfall, outflow, outgate, outgo, outlet, outpour, overact,
   overdramatize, palaver, patter, pawn, perorate, plash, play,
   pledge, pontificate, pop, pore, port, post, pour, pour forth,
   pour out, prate, prattle, put in hock, put in pawn, put up,
   rabble-rouse, rainburst, rainspout, rainstorm, ramble on, rant,
   rattle, rattle on, rave, read, recite, reel off, rise, rising,
   roar, rocketing up, rodomontade, run on, run out, rush, sally port,
   saltation, scud, send forth, send out, shoot, shooting up, sluice,
   sluice out, soaker, soaking rain, soaring, spate, speechify, spew,
   spew out, spiel, spiracle, spit, spout off, spout out, spouter,
   spray, spring, spritz, spurt, spurtle, squirt, stake, stream,
   surge, takeoff, taking off, talk, talk away, talk nonsense,
   talk on, tap, throw away, throw out, tittle-tattle,
   torrent of rain, tub-thump, twaddle, twattle, underact,
   up the spout, upclimb, upcoming, updraft, upgang, upgo, upgoing,
   upgrade, upgrowth, uphill, upleap, uplift, upping, uprisal, uprise,
   uprising, uprush, upshoot, upslope, upsurge, upsurgence, upsweep,
   upswing, vault, vent, ventage, venthole, vomit, vomit forth,
   vomit out, vomitory, waffle, waterspout, way out, weir, well,
   well out, yak, yakkety-yak, zooming