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1. A very loud utterance (like the sound of an animal)
   - bellow, bellowing, holla, holler, hollo [non-standard], holloa, roar, roaring, yowl

1. Shout out
   "He hollered out to surrender our weapons"
   - holler out
    
2. Utter a sudden loud cry
   - shout, shout out, cry, call, yell, scream, hollo [non-standard], squall
    
3. Complain
   "What was he hollering about?"
   - gripe, bitch, grouse, crab, beef, squawk, bellyache

Type of: call, complain, cry, emit, kick, kvetch [N. Amer], let loose, let out, outcry, plain [archaic], quetch, shout, sound off, utter, vociferation, yell

Encyclopedia: Holler Holler, Germany