/'rækɪt; `rækɪt/
n (infml 口)
1 [sing] loud noise; uproar or noisy disturbance 喧嚷; 吵闹
*What a racket the children are making! 这些孩子太吵了!
* The students kicked up no end of a racket (ie were very noisy and boisterous) in the street. 这些学生在街上大吵大闹.
2 [C]
(a) dishonest or illegal way of getting money 敲诈; 勒索; 诈骗
*the gambling/protection/drugs racket 赌博[收取保护费/贩毒]的勾当
* Police investigating the fraud suspected him of being in on (ie profiting by) the racket. 警方调查这一诈骗案时怀疑他涉嫌参与诈骗活动.
(b) business or occupation 生意; 职业
*What's your racket? 你是干哪一行的?
* How did she get into the modelling racket? 她是怎样当上模特儿的?

v [I, Ip] ~ (about/around) (infml 口) move about noisily; join in wild social activities 到处闹腾; 参加喧闹的社交活动.

n
[Sense: 1-2; Date: 1500-1600; Origin: Probably from the sound.]
[Sense: 3; Date: 1500-1600; Language: French;Origin: raquette, from Italian racchetta, from Arabic rahah 'front of the hand']
[singular]informal
a loud noise
　The old machine used to make an awful racket .
[C]informal
a dishonest way of obtaining money, such as by threatening people or selling them illegal goods
drugs/gambling/smuggling etc racket
　Police believe he is involved in an international smuggling racket.
→protection racketatprotection

[C]alsoracquet
a specially shaped piece of wood or metal that you use for hitting the ball in games such as tennis, that has a circle filled with tight strings at one end
→bat
　a tennis racket