Alternative form of pincushion

plural of bobby pin

plural of relative pin

plural of absolute pin

plural of partial pin

(chess) A pin in which moving away the pinned piece would allow capture of a piece other than the king.

(chess) A pin where a rook or queen is pinned along a file, or a bishop or queen is pinned along a diagonal.

(chess) A pin in which moving away the pinned piece would illegally expose the king to check.

The tree Quercus palustris. / The tree Quercus ellipsoidalis.

A variety of the game of billiards in which small wooden pins are set up to be knocked down by the balls.