seminiferous tubule any of the numerous long convoluted tubules in the testis which are the sites where spermatozoa mature
cobblers a man's testicles (from Cockney rhyming slang: cobbler's awl rhymes with ball)
undescended testicle,
undescended testis a testis that fails to move into the scrotum as the male fetus develops; "undescended testicles have an increased risk for cancer"
epididymis a convoluted tubule in each testis; carries sperm to vas deferens
rete testis network of tubules carrying sperm from the seminiferous tubules to the vasa efferentia
testicle -
The male sex and endocrinegland, found in some types of animals, that produces sperm and male sex hormones, including the steroid testosterone.
Wikipedia
The testicle (from Latin testiculus, diminutive of testis, meaning "witness", plural testes) is the male generative gland in animals.
OmegaWiki Dictionary
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testicle The male sex gland that produces sperm and male hormones, found in some types of animals.