punching bag

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. a person on whom another person vents their anger
- he resigned because his boss used him as a punching bag
• Hypernyms:
victim
2. an inflated ball or bag that is suspended and punched for training in boxing
• Syn:
punch bag, punching ball, punchball
• Hypernyms:
ball