DUOTONE
Du"o*tone, n. [L. duo two + tone.] (Photoengraving)
Defn: Any picture printed in two shades of the same color, as duotypes and duographs are usually printed.
DUOTYPE
Du"o*type, n. [L. duo two + type.] (Photoengraving)
Defn: A print made from two half-tone plates made from the same negative, but etched differently.
DUP
Dup, v. t. Etym: [Contr. fr. do up, that is, to lift up the latch.
Cf. Don, Doff.]
Defn: To open; as, to dup the door. [Obs.] Shak.
DUPABLE
Dup"a*ble, a.
Defn: Capable of being duped.
DUPE
Dupe, n. Etym: [F., prob. from Prov. F. dupe, dube; of unknown
origin; equiv. to F. huppe hoopoe, a foolish bird, easily caught. Cf.
Armor. houpérik hoopoe, a man easily deceived. Cf. also Gull, Booby.]
Defn: One who has been deceived or who is easily deceived; a gull; as, the dupe of a schemer.