Poop may refer to:

Originally, the stern, the rear-end of a ship, opposite the bow; hence:

• poop deck and poop cabin (located at the stern)
• Puppis (the original Latin word), an astronomical constellation

In slang:

• The act of defecation (being a bodily function of animal/human rear-end); also as a verb
• Feces, the product of defecation
• Scatology and toilet humour
• The act of becoming fatigued or of fatiguing another
• Inside information

In fiction:

• A soft drink and later a candy bar in the cartoon series Invader Zim

The acronym POOP may stand for:

• Perl Object-oriented programming
• Perl Object-Oriented Persistence
• Post Object-Oriented Programming