yo-yo
Concise Oxford English Dictionary © 2008 Oxford University Press:
yo-yo /ˈjəʊjəʊ/ (trademark in the UK)
▶noun (pl. yo-yos)
- 1 a toy consisting of a pair of joined discs with a deep groove between them in which string is attached and wound, which can be spun alternately downward and upward by its weight and momentum as the string unwinds and rewinds.
■ a thing that repeatedly fluctuates.
- 2 informal, chiefly N. Amer. a stupid, insane, or unpredictable person.
– origin 1915: prob. ult. from a lang. of the Philippines.
'yo-yo' also found in these Oxford entries:
