Dup
Here is the meaning and Word Scramble Game information for Dup
DUP6 is a valid Scrabble Word in NWL, formerly TWL (USA, Thailand, Canada)
DUP6 is a valid Scrabble Word in CSW, formerly SOWPODS (Other Countries)
DUP8 is a valid word in WWF
(v. t.) To open; as, to dup the door.