しゃくれる

しゃ

く

れ

る

Meanings

1

ichidan verb

have an underbite; have a protruding chin

usually written using kana alone

Describes a chin that juts forward, giving an underbite appearance. Often used in the phrase 顎がしゃくれる.

受うけ口ぐち
受け口 is a noun meaning 'underbite' or 'protruding lower jaw', while しゃくれる is the verb describing the state of having such a chin.
凹へこむ
凹む is a more common verb for 'become dented' or 'be concave', while しゃくれる is less frequent and often specifically refers to a chin or a dish-like shape.

The origin is uncertain. It may be related to しゃくる (to scoop or hollow out), but the exact derivation is unclear.