Etymology: Uncertain, possibly from Middle English poupen (“to make a gulping sound while drinking, blow on a horn, toot”). Compare Dutch poepen (“to defecate”), German Low German pupen (“to fart; break wind”). Also representing poo pronounced with the mouth snapped closed at the end.

Expressing annoyed disappointment.
“Poop. The copier's broken again.”
“I don't need him for a friend. I can have fun by myself! ... Poop.”

noun

Etymology: Likely from French poupe; see poppyhead.

A poppyhead finial seen on church pews and occasionally on other types of seating benches.

verb

Etymology: From Middle English poupe, pope, from Old French pope, poupe, pouppe, from Italian poppa, from Vulgar Latin *puppa, from Latin puppis, all meaning “stern of a ship”.

To break seawater with the poop (stern) of a vessel, especially the poop deck.
To break over the stern of (a vessel).
“We were pooped within hailing of the quay and were nearly sunk.”
“Another night, as we were scudding before a heavy gale of wind, and a tremendous sea rolling after us, we had the misfortune to be pooped, as the phrase is, by a wave or sea striking our stern, which stove in the cabin-windows, and rushing impetuously through the cabin, and along the main-deck, bore down all before it.”