bob /ˈbɑb/
 (vt.)剪短,敲擊,急拉(vi.)振動,上下跳動髮髻,微不足道的東西,懸掛的飾品
 Bob n.
 1. Anything that hangs so as to play loosely, or with a short abrupt motion, as at the end of a string; a pendant; as, the bob at the end of a kite's tail.
    In jewels dressed and at each ear a bob.   --Dryden.
 2. A knot of worms, or of rags, on a string, used in angling, as for eels; formerly, a worm suitable for bait.
 Or yellow bobs, turned up before the plow,
 Are chiefest baits, with cork and lead enow.   --Lauson.
 3. A small piece of cork or light wood attached to a fishing line to show when a fish is biting; a float.
 4. The ball or heavy part of a pendulum; also, the ball or weight at the end of a plumb line.
 5. A small wheel, made of leather, with rounded edges, used in polishing spoons, etc.
 6. A short, jerking motion; act of bobbing; as, a bob of the head.
 7. Steam Engine A working beam.
 8. A knot or short curl of hair; also, a bob wig.
    A plain brown bob he wore.   --Shenstone.
 9. A peculiar mode of ringing changes on bells.
 10. The refrain of a song.
    To bed, to bed, will be the bob of the song.   --L'Estrange.
 11. A blow; a shake or jog; a rap, as with the fist.
 12. A jeer or flout; a sharp jest or taunt; a trick.
 He that a fool doth very wisely hit,
 Doth very foolishly, although he smart,
 Not to seem senseless of the bob.   --Shak.
 13. A shilling. [Slang, Eng.]
 Bob v. t. [imp. & p. p. Bobbed p. pr. & vb. n. Bobbing.]
 1. To cause to move in a short, jerking manner; to move (a thing) with a bob. “He bobbed his head.”
 2. To strike with a quick, light blow; to tap.
    If any man happened by long sitting to sleep . . . he was suddenly bobbed on the face by the servants.   --Elyot.
 3. To cheat; to gain by fraud or cheating; to filch.
    Gold and jewels that I bobbed from him.   --Shak.
 4. To mock or delude; to cheat.
 To play her pranks, and bob the fool,
 The shrewish wife began.   --Turbervile.
 5. To cut short; as, to bob the hair, or a horse's tail.
 Bob, v. i.
 1. To have a short, jerking motion; to play to and fro, or up and down; to play loosely against anything. “Bobbing and courtesying.”
 2. To angle with a bob. See Bob, n., 2 & 3.
 He ne'er had learned the art to bob
 For anything but eels.   --Saxe.
 To bob at an apple, cherry, etc. to attempt to bite or seize with the mouth an apple, cherry, or other round fruit, while it is swinging from a string or floating in a tug of water.
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 bob
      n 1: a former monetary unit in Great Britain [syn: British
           shilling, shilling]
      2: a hair style for women and children; a short haircut all
         around
      3: a long racing sled (for 2 or more people) with a steering
         mechanism [syn: bobsled, bobsleigh]
      4: a hanging weight, especially a metal ball on a string
      5: a small float usually made of cork; attached to a fishing
         line [syn: bobber, cork, bobfloat]
      6: a short or shortened tail of certain animals [syn: bobtail,
          dock]
      7: a short abrupt inclination (as of the head); "he gave me a
         short bob of acknowledgement"
      v 1: move up and down repeatedly; "her rucksack bobbed gently on
           her back"
      2: ride a bobsled; "The boys bobbed down the hill screaming
         with pleasure" [syn: bobsled]
      3: remove or shorten the tail of an animal [syn: dock, tail]
      4: make a curtsy; usually done only by girls and women; as a
         sign of respect; "She curtsied when she shook the Queen's
         hand" [syn: curtsy]
      5: cut hair in the style of a bob; "Bernice bobs her hair these
         days!"
      [also: bobbing, bobbed]