testicle

n. testis, male reproductive organ located within the scrotum

The testicle (from Latin testis, meaning "witness", plural testes) or ballock is the male generative gland in animals. This article will concentrate on mammalian testicles unless otherwise noted.
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Testicle /tes·ti·cle/ testis. tes·ti·cle n. A testis, especially one contained within the scrotum. testicle testis. [more]Testicle - Community and Resources

Noun
1. one of the two male reproductive glands that produce spermatozoa and secrete androgens; "she kicked him in the balls and got away"
(synonym) testis, orchis, ball, ballock, bollock, nut, egg
(hypernym) male reproductive gland
(hyponym) cobblers
(part-holonym) male reproductive system
(part-meronym) testicular artery, internal spermatic artery, arteria testicularis

(n.)
One of the essential male genital glands which secrete the semen.