YO


Meaning of YO in English

interj.

Pronunciation: ' y ō

Function: interjection

Etymology: Middle English yo, io, interjection

Date: 15th century

― used especially to call attention, to indicate attentiveness, or to express affirmation

Merriam Webster Collegiate English Dictionary.      Merriam Webster - Энциклопедический словарь английского языка.