- testicle
- 1590s, alteration of testicule (early 15c.), from L. testiculus, dim. of testis "testicle" (see testis). The O.E. was herşan, probably originally "leather bag" (cf. heorşa "deer-skin"). The commonest slang terms for them in other languages are words that mean "balls," "stones," "nuts," "eggs."