1
Black slang for "holler" - used as an exclamation of an understood, universal awareness, affirmation, arrival or recognition of a particular reality or a person or both.
2
> (A student gives a speech at graduation where she references an inside, maybe taboo, experience that all students are aware of. When other students begin to call out a key word, acknowledging the fact to her in support, she laughs and echoes back... "Hollah!"