Definitions
1.nounOne that resembles or corresponds to another; an identical copy."This is a duplicate, but a very good replica."
2.nounAn original instrument repeated; a document which is the same as another in all essential particulars, and differing from a mere copy in having all the validity of an original.
3.nounA pawnbroker's ticket, which must be shown when redeeming a pledged item.
4.nounThe game of duplicate bridge.
5.nounThe game of duplicate Scrabble.
6.nounA biological specimen that was gathered alongside another specimen and represents the same species.