Entry 5 senses · 4 variants Webster, 1913 Ho /hō/ · IPA /hoʊ/ pron. n. prop. n. interj. 01 pron. Who. 1. Who.[Obs.] 02 n. A stop; a halt; a moderation of pace. 1. A stop; a halt; a moderation of pace. “There is no ho with them.” — Decker. 03 prop. n. The chemical symbol for Holmium. 1. The chemical symbol for Holmium.(Chem.) 04 interj. Halloo! attend! -- a call to excite attention, or to give notice of approach. 1. Halloo! attend! -- a call to excite attention, or to give notice of approach. 2. Stop! stand still! hold! -- a word now used by teamsters, but formerly to order the cessation of anything. “The duke . . . pulled out his sword and cried “Hoo!”” — Chaucer. “An herald on a scaffold made an hoo.” — Chaucer.