- excretory organ, urinary organ - an organ that separates waste substances from the blood and discharges them
--1 is a kind of internal organ, viscus
--1 is a part of
--1 has particulars: flame cell; kidneyurogenital system, urogenital apparatus, urinary system, urinary apparatus, genitourinary system, genitourinary apparatus, systema urogenitale, apparatus urogenitalis