腰こし抜ぬけ

noun

coward; chicken; wimp

Derogatory term for a person who lacks courage or resolve. Literally 'lacking a waist/backbone', implying spinelessness. Often used as an insult.

• あいつは腰こし抜ぬけだ。

  That guy is a coward.

• 腰こし抜ぬけ呼よばわりされて腹はらが立たった。

  I got angry when they called me a coward.