excretory duct n.
Any of the various ducts carrying secretion from a gland or fluid from a reservoir.
I except the mumps, or parotitis, described below; which is properly an external gland, as its excretory duct opens into the air.
Emunctory, e-mungk′tor-i, n. an organ of the body that carries off waste: an excretory duct.
This simple gland consists of two absorbing mouths, a belly, and an excretory duct.