yo-yo
n. (pl. Yo-yos) 1 toy consisting of a pair of discs with a deep groove between them in which string is attached and wound, and which can be made to fall and rise. 2 thing that repeatedly falls and rises. [origin unknown]
n. (pl. Yo-yos) 1 toy consisting of a pair of discs with a deep groove between them in which string is attached and wound, and which can be made to fall and rise. 2 thing that repeatedly falls and rises. [origin unknown]