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poop 1

1. An enclosed superstructure at the stern of a ship.
2. A poop deck.
tr.v. pooped, poop·ing, poops
1. To break over the stern of (a ship). Used of a wave.
2. To take (a wave) over the stern.

[Middle English poupe, from Old French, from Vuglar Latin *puppa, alteration (possibly influenced by Latin prōra, prow) of Latin puppis, stern, poop, of unknown origin.]

poop 2

tr.v. pooped, poop·ing, poops Slang
To cause to become fatigued; tire: "Many people stop here, pooped by the short, steep climb" (Sierra Club Guides to the National Parks).
Phrasal Verb:
poop out Slang
1. To quit because of exhaustion: poop out of a race.
2. To decide not to participate, especially at the last moment.

[Origin unknown.]

poop 3

n. Slang
Inside information: She gave me all the poop on the company party.

[Origin unknown.]

poop 4

n. Slang
A person regarded as very disagreeable.

[Perhaps short for nincompoop.]

poop 5

 (po͞op) Informal
intr.v. pooped, poop·ing, poops
To defecate.
To defecate in (one's clothes or bed, for example).

[Possibly from obsolete poop, to break wind, from Middle English poupen, to blow a horn, toot, of imitative origin.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in periodicals archive ?
Ian Lustbader of the New York University Langone Health stated that nothing good ever comes out if humans suddenly stopped pooping. In fact, if nothing comes out, you are in the run to develop and acquire either fecal retention or colon slowdown.
The CBS Miami entertainment and lifestyle reporter captured a photo of Markle wearing all-black cap, shirt, pants and shoes standing and watching her pet pooping.
Neighbours, Budde said, have told her they have also seen the woman pooping in backyards and at a local Walgreens.
But while learning to use the toilet for urination and defecation generally occur around the same time, there are pitfalls making pooping in the potty different.
The seemingly all-powerful Environmental Protection Agency can lock you out of your own property forever, fine you millions of dollars for beavers doing what beavers do--building dams in the stream on your land--and imprison you for catching rainwater in a barrel, but they can't control one of their own employees pooping in the office hallway?