gizzard worm
nounDefinition of gizzard worm
: any of various nematode worms parasitic in the gizzard of birds: such as
a
: a spiruroid worm of the genus Acuaria that is a destructive parasite of chickens, turkeys, and related game birds
b
: a spiruroid worm (Amidostomum anseris) sometimes fatal to ducks and geese