Gonad (noun)

1. A reproductive gland in the male or female that produces gametes, such as the testis or ovary.
2. An organ in the body that produces sperm or eggs in animals.

Origin:

Mid 19th century: from greek gonos "seed, offspring" + -ad.

Examples:

1. The gonads are the testes in males and the ovaries in females.
2. The gonads produce the sperm and eggs.
3. Gonad dysfunction can lead to infertility.
4. Gonads are affected by endocrine disruptors, leading to fertility issues.
5. The gonads are a vital part of the reproductive system.