gonad

n. sex gland

The gonad is the organ that makes gametes. The gonads in males are the testes and the gonads in females are the ovaries. The product, gametes, are haploid germ cells. For example, sperm and egg cells are gametes. Although medically the gonad term can refer to either male gonads (testicles) or female gonads (ovaries), the vernacular, or slang use of "gonads" (or "nads") usually only refers to the testicles.
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Gonad /go·nad/ a gamete-producing gland; an ovary or testis.gonad´algonad´ial indifferent gonad the sexually undifferentiated gonad of the early [more]Gonad - Community and Resources

Noun
1. a gland in which gametes (sex cells) are produced
(synonym) sex gland
(hypernym) endocrine gland, endocrine, ductless gland
(hyponym) ovary

n. gonad