(idiomatic) The best person or item in a group; the best that one has to offer.

To finish completely. / To kill.

(Britain) For sale at a reduced price. / (UK) Available to take; at hand; being offered or to be offered.

(US, Mafia, slang) A member of the Mafia in another town or district, but not a direct rival.

(simile) With crazy or excessive intensity or speed.

(US, Mafia, slang) A personal friend of the speaker/writer who is not a member of the Mafia.

(transitive, idiomatic) To overreact to or overstate; to treat too seriously or be overly concerned with.

A permit once granted to convicts allowing them to leave prison under certain circumstances; used especially of convicts transported to the British colonies

Unique, singular, sui generis.

A unique example.