bobber

/B AA1 B ER0/
noun
  1. 1

    One who takes part in apple bobbing.

  2. 2

    A buoyant device (frequently made of cork) attached to a line so as to suspend the end of the line with the hook (and bait or lure) above the bottom.

  3. 3

    A style of custom motorcycle with stripped-down bodywork and a shortened (or "bobbed") rear fender.

  4. 4

    A person who rides a bobsleigh; a bobsleigher.

Synonyms

Source: https://en.wiktionary.org/wiki/bobber