1. (noun)testis, testicle, orchis, ball, ballock, bollock, nut, egg one of the two male reproductive glands that produce spermatozoa and secrete androgens "she kicked him in the balls and got away"
Definitions of 'testicle'
Webster 1913 Dictionary
1. (noun)testicle one of the essentialmale genital glands which secrete the semen