Definition of: yell

(yel) v.t. & v.i.
To shout; scream; roar; also, to cheer. See synonyms under CALL, ROAR.
—noun
1. A sharp, loud, inarticulate cry, as of pain, terror, anger, etc.
2. A rhythmic cheer composed of a prearranged set of words and shouted by a group in unison. [OE gellan, giellan]
—yell′er noun