gizzard

(redirected from gizzard impaction)
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gizzard

1. the thick-walled part of a bird's stomach, in which hard food is broken up by muscular action and contact with grit and small stones
2. a similar structure in many invertebrates

gizzard

[′giz·ərd]
(vertebrate zoology)
The muscular portion of the stomach of most birds where food is ground with the aid of ingested pebbles.