'HOA' definitions:

Definition of 'Hoa'

From: GCIDE

Ho \Ho\, Hoa \Hoa\, n. [See Ho, interj., 2.] A stop; a halt; a moderation of pace. [1913 Webster]
There is no ho with them. --Decker.

From: GCIDE

Ho \Ho\, Hoa \Hoa\ (h[=o]), interj. [Cf. F. & G. ho.]
1. Halloo! attend! -- a call to excite attention, or to give notice of approach. "What noise there, ho?" --Shak. "Ho! who's within?" --Shak. [1913 Webster]
2. [Perhaps corrupted fr. hold; but cf. F. hau stop! and E. whoa.] Stop! stand still! hold! -- a word now used by teamsters, but formerly to order the cessation of anything. [Written also whoa, and, formerly, hoo.] [1913 Webster]
The duke . . . pulled out his sword and cried "Hoo!" --Chaucer. [1913 Webster]
An herald on a scaffold made an hoo. --Chaucer. [1913 Webster]