hoo

Etymology 1

From Middle English hoo, shoo (“she”) from Old English hēo (“she”). More at she.

pron

1. (South Lancashire, Yorkshire, Derbyshire) she
   'Aye, aye,' said the father, impatiently, 'hoo'll come. Hoo's a bit set up now, because hoo thinks I might ha' spoken more civilly; but hoo'll think better on it, and come. I can read her proud bonny face like a book. 1854, Elizabeth Cleghorn Gaskell, North and South, Chapter VIII
2. (West Midlands and South West England) he, also a gender-neutral third person pronoun

Etymology 2

From Middle English hoo, ho. More at ho.

intj

1. (obsolete) hurrah; an exclamation of triumphant joy
2. (Tyneside) Used to grab the attention of others.
   Hoo yee!

Etymology 3

From Middle English howe, hu (“how”), from Old English hū (“how”). More at how.

adv

1. (Northumbria, Tyneside) how

Etymology 4

From Middle English hough, hogh, ho, from Old English hōh. Doublet of hough.

noun

1. (obsolete outside placenames) A strip of land; a peninsula; a spur or ridge.