What does "gizzard" mean?

A specialized organ constructed of thick muscular walls found in the digestive tract of some animals, including archosaurs (including crocodilians and birds), earthworms, some gastropods, some fish, and some crustaceans, and used for grinding up food, often aided by particles of stone or grit.

What is a synonym for "gizzard"?

Common synonyms include: abatis, abdomen, abomasum, anus, appendix, bay window.

Gizzard

//ˈɡɪzɚd// noun, slang

noun, slang ·Moderate ·High school level

Definitions

Noun

1
A specialized organ constructed of thick muscular walls found in the digestive tract of some animals, including archosaurs (including crocodilians and birds), earthworms, some gastropods, some fish, and some crustaceans, and used for grinding up food, often aided by particles of stone or grit.
"As fortune has it, kingbirds, like owls, lack a grinding gizzard and regurgitate hard fragments from their meals."
2
thick-walled muscular pouch below the crop in many birds and reptiles for grinding food wordnet
3
The (human) stomach. slang
""Pushing a man's face into his own breakfast is beyond rules or reason, and deserves a punch in the gizzard.""