an informant who exposes wrongdoing within an organization in the hope of stopping it; "the law gives little protection to whistleblowers who feel the public has a right to know what is going on"; "the whistleblower was fired for exposing the conditions in mental hospitals"
a former instrument of punishment consisting of a heavy timber frame with holes in which the feet (and sometimes the hands) of an offender could be locked
a frame for constraining an animal while it is receiving veterinary attention or while being shod
a frame that supports a boat while it is under construction