YO
Meaning of YO in English
/ jəʊ; NAmE joʊ/ exclamation
( slang ) used by young people to say hello
••
WORD ORIGIN
natural exclamation: first recorded in late Middle English .
Oxford Advanced Learner's English Dictionary.
Оксфордский английский словарь для изучающик язык на продвинутом уровне.
2005