gonad

The part of the reproductive system that produces and releases eggs (ovary) or sperm (testicle/testis).

One of the (usually paired) animal organs that produce reproductive cells (gametes). The most important gonads are the male testis, which produces spermatozoa, and the female ovary, which produces ova (egg cells). The gonads also produce hormones that control secondary sexual characteristics.

An organ that produces sex cells (testes or ovaries).