I. ˈyel verb
Etymology: Middle English, from Old English giellan; akin to Old High German gellan to yell, Old English galan to sing
Date: before 12th century
intransitive verb
1. : to utter a loud cry, scream, or shout
2. : to give a cheer usually in unison
transitive verb
: to utter or declare with or as if with a yell : shout
• yell·er noun
II. noun
Date: 14th century
1. : scream , shout
2. : a usually rhythmic cheer used especially in schools or colleges to encourage athletic teams