Ho

• POS: Interjection, Noun

CIDE DICTIONARY

Ho, pron. 

 Who.
"In some Chaucer MSS."

Ho, n. [See Ho, interj., 2.].

 A stop; a halt; a moderation of pace.  [1913 Webster]
"There is no ho with them."

Ho, prop. n. 

 The chemical symbol for Holmium.  [PJC]

Ho, interj. [Cf. F. & G. ho.].

•  Halloo! attend! -- a call to excite attention, or to give notice of approach.  Shak.  [1913 Webster]
•  Stop! stand still! hold! -- a word now used by teamsters, but formerly to order the cessation of anything.  [1913 Webster]

  "The duke . . . pulled out his sword and cried “Hoo!”"  [1913 Webster]

  "An herald on a scaffold made an hoo."  [1913 Webster]

OXFORD DICTIONARY

Ho, symb. Chem. the element holmium.

Ho, int.
1 a an expression of surprise, admiration, triumph, or (often repeated as ho! ho! etc.) derision. b (in comb.) (heigh-ho; what ho).
2 a call for attention.
3 (in comb.) Naut. an addition to the name of a destination etc. (westward ho).

Etymology

ME, imit.: cf. ON h{oacute}