definition of
hollo

[1] #1 hollo n. [bellow, bellowing, holla, holler, hollering, holloa, roar, roaring, yowl] a very loud utterance (like the sound of an animal); "his bellow filled the hallway". wn

[2] #2 hollo v. encourage somebody by crying hollo. wn

[3] #3 hollo v. cry hollo. wn

[4] #4 hollo v. [shout, shout out, cry, call, yell, scream, holler, squall] 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". wn