Having two wings.
ETYM Old Eng. doble, duble, double, Old Fren. doble, duble, double, French double, from Latin duplus, from the root of duo two, and perh. that of plenus full; akin to Greek diploos double. Related to Two, and Full, Diploma, Duple.
1. Twice as great or many; SYN. doubled, twofold.
2. Consisting of or involving two parts or components usually in pairs; SYN. dual, duple.
3. Large enough for two.
4. Having two meanings with intent to deceive; SYN. forked.
5. Having more than one decidedly dissimilar aspects or qualities.
6. (Botany; of flowers) Having more than the usual number of petals in crowded or overlapping arrangements.