受うけ口ぐち

う

け

ぐ

ち

Meanings

protruding lower lip and jaw; underbite

Describes a facial feature where the lower lip and jaw stick out; often used in everyday descriptions of appearance.

socket; receiving slot; opening

Only with reading うけぐち

Technical term for a part designed to receive or hold another object, such as a socket, slot, or receiving window in machinery or construction.

差さし込こみ口ぐち
差し込み口 emphasizes the insertion side, while 受け口 focuses on the receiving part.
受うけ
受け is a broader term for a receiver or catch; 受け口 specifically refers to a mouth-like opening or socket.

Compound of 受け (uke, 'receiving') + 口 (kuchi, 'mouth'). The reading うけくち is a variant, but うけぐち is standard.