[1595–1605; ‹ F ‹ L tribad- (s. of tribas) ‹ Gk tribás, equiv. to trib-, var. s. of tri᷇b(ein) to rub + -as (s. -ad-) -ade2]This word is first recorded in the period 1595–1605. Other words that entered Englishat around the same time include: density, exposure, premium, slur, zero