Main Entry: ²pin

Function: transitive verb

Inflected Form(s): pinned; pin·ning

Date: 14th century

1 a : to fasten, join, or secure with a pin b : to hold fast or immobile c : to present (a young woman) with a fraternity pin as a pledge of affection
2 a : fasten <pinned his hopes on a miracle> <pin the blame on someone else> b : to assign the blame or responsibility for <pin the robbery on a night watchman> c : to define or determine clearly or precisely —usually used with down <it is hard to pin down exactly when things changed — Katharine Whittemore>
3 a : to make (a chess opponent's piece) unable to move without exposing the king to check or a valuable piece to capture b of a wrestler : to secure a fall over (an opponent)