1. числительное пятьдесят Например: He is over fifty. — Ему за пятьдесят. 2. имя существительное пятьдесят (единиц, штук)
noun (plural fifties) Etymology: Middle English, from fifty, adjective, from Old English fīftig, from fīftig, noun, group of 50, from fīf five + -tig group of ten; akin to tīen ten 1. — see number table 2. plural the numbers 50 to 59; specifically the years 50 to 59 in a lifetime or century 3. a 50-dollar bill • fiftieth adjective or noun • fifty adjective • fifty pronoun, plural in construction • fiftyish adjective