つっかい

noun

prop; support; brace

A physical prop or brace used to support something, such as a pole or stick placed against a wall or door to keep it from moving.

• 倒たおれそうな塀へいにつっかいを当あてた。

  I put a prop against the fence that was about to fall over.

• ドアが閉しまらないように、つっかいをかませておいた。

  I wedged a brace to keep the door from closing.