n. & v.
--n.
1. a piece of flat usu. round metal stamped and issued by authority as money.
2 (collect.) metal money.
--v.tr.
1. make (coins) by stamping.
2 make (metal) into coins.
3 invent or devise (esp. a new word or phrase).
Phrases and idioms:
coin-box
1. a telephone operated by inserting coins.
2 the receptacle for these. coin money make much money quickly. coin-op a launderette etc. with automatic machines operated by inserting coins. to coin a phrase iron. introducing a banal remark or clich{eacute}.
Etymology: ME f. OF, stamping-die, f. L cuneus wedge