yoo-hoo
yoo–hoo
interj \ˈyü-(ˌ)hü\Definition of YOO-HOO
—used to attract attention or as a call to persons
See Origin of YOO-HOO
probably alteration of yo-ho, interjection used to attract attention — more at yahoo
First Known Use: circa 1924
Seen & Heard 
What made you want to look up yoo-hoo? Please tell us where you read or heard it (including the quote, if possible).
