noun
A cylindrical kitchen tool used to flatten dough.
パイ生地を打ち棒で伸ばす。
Roll out the pie dough with a rolling pin.
noun
A prop used in comedy performances to produce a loud slapping sound without causing injury; also refers to the comedic style itself.
コメディアンが打ち棒で相手の頭を叩くふりをした。
The comedian pretended to hit the other person's head with a slapstick.
麺棒 specifically refers to a rolling pin for noodles, while 打ち棒 is a more general term for a rolling pin or slapstick.
Compound of 打ち (uchi, 'striking') + 棒 (bō, 'stick'). The exact historical derivation is uncertain, but the word literally means 'striking stick', fitting both the rolling pin and slapstick senses.