| 1. yellowish liquid waste secreted by the kidneys through the urethra, pee. urineurine, v. i. to urinate. [obs.]urine urine , n. [f. urine, l. urina; akin to urinari to plunge under water, to dive, gr. urine; cf. skr. vār water, icel. r drizzling rain, as. w?r the sea.] (physiol.) in mammals, a fluid excretion from the kidneys; in birds and reptiles, a solid or semisolid excretion.note: in man, the urine is a clear, transparent fluid of an amber color and peculiar odor, with an average density of 1 |