The phrase "a holler" is correct and usable in written English.
It is typically used in informal contexts to mean a shout or call, often to get someone's attention.
Example: "If you need anything, just give me a holler."
Alternatives: "a shout" or "a call".
"It's a hoot and a holler".
"I heard a holler," he said.
Her voice was strong and reedy on the recording — halfway between a holler and a plaint.
Everyone he saw received a holler, a handshake or a lingering moment of schmoozing.
I shut off my bike lights and let out a holler.
The larger point was to raise a holler about Atlantic Yards in general.
After a lull he hollered something in the Kuna language to a kitchen girl, who hollered back in Spanish.
His orange face is featureless, except for a hollering mouth.
Mr. Martin found himself trapped in a hollering swarm of Yankee fans.
When he inaugurated his Philharmonic tenure, at the Hollywood Bowl, a crowd of eighteen thousand people greeted him with a hollering, stamping, pop-star ovation.
There were explosions, noisy firearms and big talk, but "One Man Army" looks like basic training, without a hollering drill sergeant.
