A slapshot
A clapstick (musical instrument).
A pounding block.
A wooden mechanical device used as a scarecrow; bird-scaring rattle, a wind-rattle or a wind-clapper.
The chattering damsel of a mill.
An object so suspended inside a bell that it may hit the bell and cause it to ring; a clanger or tongue.
The hinged part of a clapperboard, used to synchronise images and soundtrack, or the clapperboard itself.
One who claps; a person who applauds by clapping the hands.
To make a repetitive clapping sound; to clatter.
Of birds, to repeatedly strike the mandibles together.
To ring a bell by pulling a rope attached to the clapper.
A sentry etc. manning an observation post
One who makes observations, monitors or takes notice
A crew member on an aircraft who makes observations of enemy positions or aircraft
A person sent as a representative, to a meeting or other function to monitor but not to participate
One who adheres or follows laws, guidelines, etc.
A country or other entity which has limited participation rights within an organization.