scrotum

n. pouch of skin that contains the testicles (Anatomy)

In some male mammals, the scrotum is a protuberance of skin and muscle containing the testicles. It is an extension of the abdomen, and is located between the penis and anus. In humans, and some other mammals, the base of the scrotum becomes covered with pubic hair at puberty. In common speech, the scrotum is often improperly referred to as the testicles, which actually refer to organs encased inside the scrotum. The scrotum is homologous to the labia majora in females. In slang, the scrotum is often referred to as the "nut sack" or "coin purse."
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Scrotum /scro·tum/ the pouch containing the testes and their accessory organs. lymph scrotum elephantiasis scroti. scro·tum n. pl. [more]Scrotum - Community and Resources

Noun
1. the external pouch that contains the testes
(hypernym) pouch, pocket
(part-holonym) male genitalia, male genitals, male genital organ, family jewels
(part-meronym) raphe, rhaphe

n. scrotum, pouch of skin that contains the testicles (Anatomy)