racket: Racket for playing tennis [16] and racket ‘noise’ [16] are unrelated words. The former was borrowed from French raquette, which originally meant ‘palm of the hand’. This goes back via Italian racchetta to Arabic rāhat, a variant of rāha ‘palm of the hand’. The origins of racket ‘noise’ are not known, although the probability is that it started life as a verbal imitation of an uproar. [racket etymology, racket origin, 英语词源]