interjection, noun, plural hul·los, verb (used with or without object), hul·loed, hul·lo·ing.
Examples from the Web for hullo
But later on, like all things Turkish, it lapsed into a matter of form, satisfied by an incoherent “Hullo!”A Prisoner in Turkey|John Still
He was greeted with friendly grins, while several voices drawled, “Hullo, Woolly Billy!”Jim|Charles G. D. Roberts
Two or three there was walkin' aft the quarterdeck, so out I sings 'Hullo!
He's seen me, you know: he was in a box the first night of 'Hullo, Peace!'What Not|Rose Macaulay
Hullo, heres a path leading up past the waterfall, cried Jack suddenly.The Ocean Wireless Boys on the Pacific|Wilbur Lawton