Origin of holla
Examples from the Web for hollo
The sound which elicited this exclamation was a loud "Hollo!"The Young Miner|Horatio Alger, Jr.
And the little Ascanius whooped and hollo'd in the middle of the room.
But that only made him hollo the louder, and he holloed so loud that at last he made somebody hear.The Flight of Pony Baker|W. D. Howells
I began to hollo desperately, calling frantically for help with such a piercing voice as I had never dreamt of possessing before.My Friends the Savages|Giovanni Battista Cerruti
"Hollo, don't kill the fellow," exclaimed Chifney running up.Mirk Abbey, Volume 1(of 3)|James Payn