HOLLOW, v.i. To Shout. [See Holla and Hollo.]Dryden, Addison.
HOLLA, HOLLO : exclam, A word used in calling. Among seamen, it is the answer to one that hails, equivalent to, I hear, and am ready. v.i. [Sax, ahlowan.] To call out or exclaim.
AMERICAN DICTIONARY OF THE ENGLISH LANGUAGE, NOAH WEBSTER, 1828, republished in facsimile edition 1983