Definition of testicle in English:

testicle

noun

  • Either of the two oval organs that produce sperm in men and other male mammals, enclosed in the scrotum behind the penis.

    Also called testis
    gonads
    cojones
    balls, knackers, nuts, rocks
    bollocks, goolies
    View synonyms

Origin

Late Middle English: from Latin testiculus, diminutive of testis a witness (i.e., to virility).

Pronunciation:

testicle

/ˈtestək(ə)l/