Noun
The second, or true, muscular stomach of birds, in which the food is crushed and ground, after being softened in the glandular stomach (crop), or lower part of the esophagus; the gigerium.
A thick muscular stomach found in many invertebrate animals.
A stomach armed with chitinous or shelly plates or teeth, as in certain insects and mollusks.
Source: Webster's dictionaryBoth birds and crocs have the identical plan to their specialized gizzard apparatus, and this type of internal food processor is absent in the other "reptiles" Robert T. Bakker
A legend, Kludd, is a story that you begin to feel in your gizzard and then over time it becomes true in your heart. And perhaps makes you become a better owl. Kathryn Lasky
Politics is the gizzard of society, full of gut and gravel. Henry David Thoreau
You can do it! You believe! Feel it in your gizzard. You are a creature of flight. Fly, my children. Fly! Kathryn Lasky
The restless grasshopper only finds rest in the gizzard of a bird. African Proverb
“A lot of people have heard of turkey gizzard or giblets that you use for gravy, but that gizzard is a big strong muscle that is their personal feed mill. Source: Internet