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punching bag

1 ENTRIES FOUND:
punching bag noun
plural punching bags
punching bag
noun
plural punching bags
Britannica Dictionary definition of PUNCHING BAG
[count] US
: a very heavy bag that usually hangs from the ceiling and that is punched for exercise or training often used figuratively to describe someone who is often criticized, hit, or defeated by another person
called also (British) punch bag