laugh \laugh\ laumf, v. i. imp.  p. p. laughed
   laumft; p. pr.  vb. n. laughing. oe. laughen,
   laghen, lauhen, as. hlehhan, hlihhan, hlyhhan, hliehhan; akin
   to os. hlahan, d.  g. lachen, ohg. hlahhan, lahhan,
   lahh=en, icel. hlaeja,w dan. lee, sw. le, goth. hlahjan;
   perh. of imitative origin.
   1. to show mirth, satisfaction, or derision, by peculiar
      movement of the muscles of the face, particularly of the
      mouth, causing a lighting up of the face and eyes, and
      usually accompanied by the emission of explosive or
      chuckling sounds from the chest and throat; to indulge in
      laughter.
      1913 webster

            queen hecuba laughed that her eyes ran o'er. --shak.
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            he laugheth that winneth.             --heywood's
                                                  prov.
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   2. fig.: to be or appear gay, cheerful, pleasant, mirthful,
      lively, or brilliant; to sparkle; to sport.
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            then laughs the childish year, with flowerets
            crowned.                              --dryden.
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            in folly's cup still laughs the bubble joy. --pope.
      1913 webster

   to laugh at, to make an object of laughter or ridicule; to
      make fun of; to deride.
      1913 webster

            no wit to flatter left of all his store,
            no fool to laugh at, which he valued more. --pope.
      

   to laugh in the sleeve, to laugh up one's sleeve, to
      laugh secretly, or so as not to be observed, especially
      while apparently preserving a grave or serious demeanor
      toward the person or persons laughed at.

   to laugh out, to laugh in spite of some restraining
      influence; to laugh aloud.

   to laugh out of the other corner of the mouth or to laugh
   out of the other side of the mouth, to weep or cry; to feel
      regret, vexation, or disappointment after hilarity or
      exaltation. slang
      1913 webster
see also:
laughed laughing to laugh at to laugh in the sleeve to laugh up one's sleeve to laugh out 
to laugh out of the other corner of the mouth to laugh out of the other side of the mouth 

laugh \laugh\, n.
   an expression of mirth peculiar to the human species; the
   sound heard in laughing; laughter. see laugh, v. i.
   1913 webster

         and the loud laugh that spoke the vacant mind.
                                                  --goldsmith.
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         that man is a bad man who has not within him the power
         of a hearty laugh.                       --f. w.
                                                  robertson.
   1913 webster
see also:
laugh 

laugh \laugh\, v. t.
   1. to affect or influence by means of laughter or ridicule.
      1913 webster

            will you laugh me asleep, for i am very heavy?
                                                  --shak.
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            i shall laugh myself to death.        --shak.
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   2. to express by, or utter with, laughter; -- with out.
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            from his deep chest laughs out a loud applause.
                                                  --shak.
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   to laugh away.
      a to drive away by laughter; as, to laugh away regret.
      b to waste in hilarity. "pompey doth this day laugh away
          his fortune." --shak.

   to laugh down.
      a to cause to cease or desist by laughter; as, to laugh
          down a speaker.
      b to cause to be given up on account of ridicule; as, to
          laugh down a reform.

   to laugh one out of, to cause one by laughter or ridicule
      to abandon or give up; as, to laugh one out of a plan or
      purpose.

   to laugh to scorn, to deride; to treat with mockery,
      contempt, and scorn; to despise.
      1913 webster
see also:
to laugh away to laugh down to laugh one out of to laugh to scorn 

laugh
     n 1: the sound of laughing syn: laughter
     2: a facial expression characteristic of a person laughing;
        "his face wrinkled in a silent laugh of derision"
     3: a humorous anecdote or remark intended to provoke laughter;
        "he told a very funny joke"; "he knows a million gags";
        "thanks for the laugh"; "he laughed unpleasantly at hisown
        jest"; "even a schoolboy's jape is supposed to have some
        ascertainable point" syn: joke, gag, jest, jape
     v : produce laughter syn: express joy, express mirth ant:
          cry
see also:
laughter joke gag jest jape express joy 
express mirth cry 

148 moby thesaurus words for "laugh":
   homeric laughter, be in heaven, be in stitches, be pleased, beam,
   belittle, belly laugh, blue story, boff, boffola, break up,
   brush aside, burst into laughter, burst of laughter, burst out,
   burst out laughing, burst with laughter, bust a gut, cachinnate,
   cachinnation, cackle, caper, caracole, chirp, chirrup, chortle,
   chuckle, convulsion, crack up, crow, dance, delight, deny, deride,
   die with delight, dirty joke, dirty story, dismiss, disregard,
   double entendre, ethnic joke, feel happy, fit of laughter, frolic,
   fun, funny story, gag, gales of laughter, gambol, giggle, glow,
   go into convulsions, go into hysterics, go into raptures, good one,
   good story, grin, guffaw, ha-ha, hearty laugh, hee-haw, hee-hee,
   hilarity, ho-ho, hoot, horselaugh, howler, ignore, jape, jeer at,
   jest, jestbook, joke, joy, lampoon, laugh at, laugh it up,
   laugh outright, laughing, laughter, lilt, minimize,
   nearly die laughing, outburst of laughter, panic, parody, pasquil,
   pasquinade, peal of laughter, play, point, poke fun at, pooh-pooh,
   purr, radiate cheer, reject, rib tickler, ridicule, riot,
   risibility, roar, roar of laughter, roar with laughter, roast,
   romp, satirize, scoff at, scorn, scream, shake like jelly,
   shake with laughter, shout, shout of laughter, shriek, shrug off,
   sick joke, sidesplitter, sight gag, simper, sing, skip, smile,
   smirk, snicker, snigger, sniggle, snort, sparkle, split,
   split with laughter, sport, spurn, story, take great satisfaction,
   taunt, tease, tee-hee, titter, tread on air, visual joke, wheeze,
   whistle, whoop, wide berth, wow, yarn, yuck, yuk-yuk