Meaning of twin-size

twin-size

Pronunciation: (twin'sīz"), [key]
— adj.
  1. (of a bed) approximately 39 in. (99 cm) wide and between 75 and 76 in. (191 and 193 cm) long; single.
  2. pertaining to or made for a twin-size bed:Cf. twin-size sheets.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.