The definition of holla, or hollo, is a slang term meaning holler, which is a shout or call.
A yell or shout; a call.
A cry of "hollo"
A long loud mournful cry; a wail.
Find another word for holloa. In this page you can discover 9 synonyms, antonyms, idiomatic expressions, and related words for holloa, like: bellow, bellowing, holla, holler, hollering, hollo, roar, roaring and yowl.