Twice (?), adv. [OE. twies (where the s is the adverbial ending; see -wards), twie, AS. twiges, twiwa; akin to twi- (in comp.) two, G. zwie-, OHG. zwi-, Icel. tvi-, L. bi-, Gr. , Skr. dvi-, and E. two. See Two.]
1.
Two times; once and again.
He twice essayed to cast his son in gold.
Dryden.
2.
Doubly; in twofold quantity or degree; as, twice the sum; he is twice as fortunate as his neighbor.
⇒Twice is used in the formation of compounds, mostly self-explaining; as, twice-horn, twice-conquered, twice-planted, twice-told, and the like.
© Webster 1913.