Definition of "Yell" :
noun: a loud utterance; often in protest or opposition
noun: a loud utterance of emotion (especially when inarticulate)
"A yell of pain."
verb: utter or declare in a very loud voice
"You don't have to yell--I can hear you just fine."
verb: utter a sudden loud cry
"I yelled to her from the window but she couldn't hear me."