1. twice(r = adv.all) - two times; "I called her twice"
2. twice(r = adv.all) double, doubly - to double the degree; "she was doubly rewarded"; "his eyes were double bright"
1. Two times; once and again. [1913 Webster]
"He twice essayed to cast his son in gold." [1913 Webster]
2. Doubly; in twofold quantity or degree; as, twice the sum; he is twice as fortunate as his neighbor. [1913 Webster]
"Twice is used in the formation of compounds, mostly self-explaining;
twice, adv.
1 two times (esp. of multiplication); on two occasions.
2 in double degree or quantity (twice as good).
Etymology:
ME twiges f. OE twige (as TWO, -S(3))
N duplication, doubling, gemination, ingemination, reduplication, iteration, renewal, double, doubled, bicipital, bicephalous, bidental, bilabiate, bivalve, bivalvular, bifold, biform, bilateral, bifarious, bifacial, twofold, two-sided, disomatous, duplex, double-faced, double-headed, twin, duplicate, ingeminate, second, twice, once more, over again, as much again, twofold, secondly, in the second place, again.