noun
metal bit; metal mouthpiece; metal gag
Rare term for a metal bit or mouthpiece, such as used on a horse or as a restraint. Also used metaphorically for a metal gag.
古い文献では、馬に金轡をはめる記述がある。
In old documents, there are descriptions of putting a metal bit on a horse.
Rare, figurative use: money paid to keep someone quiet, likened to a metal gag that prevents speaking.
「金轡をはめる」という表現は、口止め料を渡すことを意味する。
The expression 金轡をはめる means to give hush money.
Compound of 金 (kana, 'metal') and 轡 (kutsuwa, 'bit'). The hush-money sense is a metaphorical extension: a metal bit gags a horse, just as money silences a person.