口くち枷かせ

noun

gag; muzzle

A device placed in or over the mouth to prevent speech or noise. Often used in BDSM contexts, hence the vulgar label. Compare 猿轡 (さるぐつわ), a similar gag.

See also: 猿轡

• 彼かの女じょは口くち枷かせをはめられて声こえを出だせなかった。

  She was gagged and couldn't make a sound.