From Longman Dictionary of Contemporary Englishhollerhol‧ler /ˈhɒlə $ ˈhɑːlər/ verb [intransitive, transitive] especially American English informalSHOUT to shout loudly SYN yellholler at I heard someone hollering at me. —holler noun [countable]→ See Verb table
Examples from the Corpus
holler• If you need anything, just holler.• I used to scream and holler.• They pushed against the fence, waved their arms and hollered.• In a way, I was hollering for them to track me.• Mrs Bay hollered from the kitchen.• Uncautious now, he hollered her name.• He called up the stairs; she hollered in answer.• That scared me the way he hollered so loud.holler at• Hollering at me isn't going to find us a parking place.Origin holler (1600-1700) hollo “(to make) a shout to attract attention” ((16-19 centuries)) 