Definition of "holla"

holla¹

/ˈhɒlə/

interjection
1. Alternative form of hollo
  Quotations
  Holla, there! Holla, there, I say! What the devil are you about with my master's box-coat?
  1828, The Lairds of Fife, page 163
verb
third-person singular simple present hollas, present participle hollaing, simple past and past participle hollaed
1. Alternative form of hollo

/ˈhɒlə/

verb
third-person singular simple present hollas, present participle hollaing, simple past and past participle hollaed
1. (colloquial) To shout out or greet casually.
  Quotations
  School days went by. I ran across Sly a couple a times, but I wasn't in no mood to talk. He could save all that philosophical bullshit he liked to holla. Didn't nobody need to tell me what was up.
  2006, Noire [pseudonym], Thug-A-Licious: An Urban Erotic Tale, New York, N.Y.: One World, Ballantine Books, page 206
interjection
1. (colloquial) what's up; a greeting
2. (African-American Vernacular) used to express interest in a woman