A strip of land; a peninsula; a spur or ridge.
"The hikers scrambled up the steep hoo to get a better view of the valley below."
In plain English: A hoo is a piece of land that sticks out from somewhere, like a point or narrow stretch.
"The lighthouse stood at the very tip of the hoo, guiding ships through the treacherous waters."
how
"The old man asked hoo was going to pay for the dinner before anyone else could answer."
In plain English: Hoo" (as an adverb meaning "how") is an older, informal way to ask about the manner or method of something. Plain English rewrite: It means "how.
"Hoo far did you run today?"
she
"The hoo at the bar waved me over to introduce herself."
hurrah; an exclamation of triumphant joy
"When the team finally scored the winning goal, the entire stadium erupted in a deafening hoo as fans threw their hats into the air."
The village of Hoo St Werburgh on the Hoo Peninsula in Kent, England.
"After visiting several historic sites in Kent, we decided to spend our final night at a cozy guesthouse near the village of Hoo."