pushpin

/ˈpʊʃˌpɪn/

Etymology

From push + pin.

pushpin means A small pin with a head made for gripping with the fingers, to be pushed into a bulletin board so as to pin papers to it; especially, such a pin with a cylindrical head. Lexicurio rates it Sui generis — a strength score of 87 out of 100.

noun

A small pin with a head made for gripping with the fingers, to be pushed into a bulletin board so as to pin papers to it; especially, such a pin with a cylindrical head.“My invention relates to improvements in what are termed “push-pins,” said pins being adapted to support one article upon another and being particularly employed for holding photographic films stretched upon a surface, such as a board, for drying and the like.”
An old children's game where pins are placed on a table and each player tries to push his pin so as to cross the other's.

verb

To fasten with a thumbtack.