Hollo

interj. &	1.	Ho there; stop; attend; hence, a loud cry or a call to attract attention; a halloo. And every day, for food or play, Came to the mariner's hollo. - Coleridge.
v. i.	1.	To call out or exclaim; to halloo. [imp. & p. p. Holloed ; p. pr. & vb. n. Holloing.]

Noun	1.	hollo - a very loud utterance (like the sound of an animal); "his bellow filled the hallway" Synonyms: bellow, bellowing, holla, holler, hollering, holloa, yowl, roar, roaring
Verb	1.	hollo - encourage somebody by crying hollo
	2.	hollo - cry hollo
	3.	hollo - utter a sudden loud cry; "she cried with pain when the doctor inserted the needle"; "I yelled to her from the window but she couldn't hear me" Synonyms: cry, scream, shout out, yell, squall, shout, holler, call

encourage