bob

1. a short, jerky motion:

   a bob of the head.

1. to move quickly down and up:

   to bob the head.

2. to indicate with such a motion:

   to bob a greeting.

1. to make a jerky motion with the head or body.
2. to move about with jerky, usually rising and falling motions:

   The ball bobbed upon the waves.

verb phrase

1. to emerge or appear, especially unexpectedly:

   A familiar face bobbed up in the crowd.

1. a style of short haircut for women and children.
2. a docked horse's tail.
3. a dangling or terminal object, as the weight on a pendulum or a plumb line.
4. a short, simple line in a verse or song, especially a short refrain or coda.
5. Angling.
   1. a knot of worms, rags, etc., on a string.
   2. a float for a fishing line.
6. a bobsled or bob skate.
7. Scot. a bunch, cluster, or wad, especially a small bouquet of flowers.
8. Obsolete. walking beam.

1. to cut short; dock:

   They bobbed their hair to be in style.

1. to try to snatch floating or dangling objects with the teeth:

   to bob for apples.

2. Angling. to fish with a bob.

1. a tap; light blow.
2. a polishing wheel of leather, felt, or the like.

1. to tap; strike lightly.

1. a shilling.

1. a male given name, form of Robert.