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(Zoology) one of a pair of excretory organs in some crustaceans that open at the base of each antenna
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|Noun||1.||green gland - one of a pair of glands (believed to have excretory functions) in some crustaceans near the base of the large antennae|
crustacean - any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton