出气筒

出氣筒
chūqìtǒng
(metaphorical) punching bag; undeserving target of sb's wrath

CEDICT

punching bag (person serving as an object of abuse)

Wiktionary

洩愤的对象。如：「我跟你无冤无仇的，别一生气，就拿我当出气筒！」也作「出气包」。

重編國語辭典

Entry Composition

1 出气 chūqì
  1. to vent one's anger
  2. to breathe out; to exhale
=2 筒 tǒng
  1. tube
  2. cylinder
  3. to encase in sth cylindrical (such as hands in sleeves etc)
=2 筒 tǒng variant of 筒 tǒng