knacker

knacker
(Brit.)()
noun
  1. a person whose business is the disposal of dead or unwanted animals, especially those whose flesh is not fit for human consumption
    处理(尤指肉不适食用的)老弱家畜(或其尸体)的人
  2. (knackers)(vulgar slang)testicles
    (粗俚)睾丸
  3. (Irish informal)an uncouth or loutish person
    (爱尔兰,非正式)笨蛋;粗人
verb
  1. [with obj.][often as adj. knackered](Brit. informal)tire (someone) out; exhaust
    (英,非正式)使(人)筋疲力尽
    you look absolutely knackered.
    你看上去完全筋疲力尽了。
    ■damage severely
    严重损害
语源
  1. late 16th cent. (originally denoting a harness-maker, then a slaughterer of horses): possibly from obsolete knack 'trinket'. The word also had the sense 'old worn-out horse' (late 18th cent.). Sense 2 may be from dialect knacker 'castanet', from obsolete knack 'make a sharp abrupt noise', of imitative origin. It is unclear whether the verb represents a figurative use of ‘slaughter’, from sense 1, or of ‘castrate’, from sense 2
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