%emulge%

a. [ L. emulgens, p. pr. of emulgere to milk out: cf. F. émulgent. So called because regarded by the ancients as straining out the serum, as if by milking, and so producing the urine. ] (Anat.) Pertaining to the kidneys; renal; as, emulgent arteries and veins. -- n. An emulgent vessel, as a renal artery or vein. [ 1913 Webster ]