The Collaborative International Dictionary of English v.0.48:
50 \50\ adj. 1. one more than fourty-nine; five times ten; denoting a quantity consisting of fifty items or units; -- representing the number fifty as an Arabic numeral. Syn: fifty, l [WordNet 1.5 +PJC]WordNet (r) 3.0 (2006):
50 adj 1: being ten more than forty [syn: fifty, 50, l] n 1: the cardinal number that is the product of ten and five [syn: fifty, 50, L]