The Collaborative International Dictionary of English v.0.48:
Sixfold \Six"fold`\, a. [AS. sixfealand.] Six times repeated; six times as much or as many. [1913 Webster]WordNet (r) 3.0 (2006):
sixfold adv 1: by a factor of six; "the population of this town increased sixfold when gold was found in the surrounding hills" [syn: sixfold, six times] adj 1: having six units or components [syn: sextuple, sixfold, six-fold]