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

duct gland, exocrine gland - a gland that secretes externally through a duct

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