5. yell a cheer or shout, as one adopted by a school to encourage a team.
Etymology: (bef. 1000; ME; OE giellan, c. MLG, MD ghellen, OHG gellan; akin to OE galan to sing (see nightingale ))
Definition of 'yell'
Princeton's WordNet
1. (noun)cry, outcry, call, yell, shout, vociferation a loud utterance; often in protest or opposition "the speaker was interrupted by loud cries from the rear of the audience"
2. (verb)cry, yell a loud utterance of emotion (especially when inarticulate) "a cry of rage"; "a yell of pain"
3. (verb)shout, shout out, cry, call, yell, scream, holler, hollo, squall utter a sudden loud cry "she cried with pain when the doctor inserted the needle"; "I yelled to her from the window but she couldn't hear me"
4. (verb)yell, scream utter or declare in a very loud voice "You don't have to yell--I can hear you just fine"