(often followed by a preposition such as "to" or "on") To fasten or attach (something) with a pin. / (chess, usually passive) To cause (a piece) to be in a pin. / (wrestling) To pin down (someone).

Alternative form of peen

A needle without an eye (usually) made of drawn-out steel wire with one end sharpened and the other flattened or rounded into a head, used for fastening. / A small nail with a head and a sharp point.

Acronym of personal identification number.

(organic chemistry) Initialism of preferred IUPAC name.

(transitive) To place the blame for (something) on (someone), especially unjustly.

present participle of pin

The action of the verb pin in any sense. / A ceremony in which a pin badge is given.

plural of PIN

Having (a specified kind or number of) pins.