holla

[hol-uh] /ˈhɒl ə/
interjection
1.
(used as an informal greeting.)
2.
(an informal exclamation of enthusiasm, joy, etc.)
3.
(used especially during a hunt) hallo.
4.
Obsolete. cease! halt!
Also, hollo [hol-oh] /ˈhɒl oʊ/ (Show IPA).
Origin
1500-50; < Middle French hola, equivalent to ho ‘ahoy’ + la ‘there’
British Dictionary definitions for holla

hollo

/ˈhɒləʊ/
noun (pl) -los, -las, -loas (-ˈləʊz)
1.
a cry for attention, or of encouragement
interjection
2.
a cry for attention, or of encouragement
verb
3.
(intransitive) to shout
Word Origin
C16: from French holà ho there!
Word Origin and History for holla

as a command to "stop, cease," 1520s, from French holà (15c.). As a command to get attention, from 1580s. As an urban slang form of holler (v.) and meaning "greet, shout out to," it was in use by 2003.