Clapper

['klæpə] or ['klæpɚ]

(noun.) metal striker that hangs inside a bell and makes a sound by hitting the side.

(noun.) someone who applauds.

Checked by Lemuel--From WordNet

(n.) A person who claps.

(n.) That which strikes or claps, as the tongue of a bell, or the piece of wood that strikes a mill hopper, etc. See Illust. of Bell.

(n.) A rabbit burrow.

Checker: Newman

Typist: Manfred