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 sericterium, serictery, silk gland - silk-producing gland of insects (especially of a silkworm) or spiders organ - a fully differentiated structural and functional unit in an animal that is specialized for some particular function ductless gland, endocrine gland, endocrine - any of the glands of the endocrine system that secrete hormones directly into the bloodstream acinus - one of the small sacs or saclike dilations in a compound gland |