punchbag

noun
🔊/ˈpʌntʃbæɡ/
🔊/ˈpʌntʃbæɡ/
(British English)
(North American English punching bag)
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  1. a heavy leather bag, hung on a rope, which is hit with the fists (= closed hands), especially by boxers as part of training, or as a form of exercise沙袋(悬吊式,用于拳击训练)Topics Health and Fitnessc2