Hoo

Part of speech: interjection (interj.)

1. See Ho. [Obs.] Chaucer.

2. Hurrah! -- an exclamation of triumphant joy. Shak.

3. A termination denoting state, condition, quality, character, totality, as in manhood, childhood, knighthood, brotherhood. Sometimes it is written, chiefly in obsolete words, in the form - head.