Stroke count: 18
Meaning: lower part of face, jaw, gills of a fish
Kunyomi: あご えら
Onyomi: サイ
Composition: 思 頁
Radical: 頁
Meaning: leaf
顎 （あご） jaw, chin, barb (of a fishhook)
鰓 （えら） gills, branchia, angle of the mandible, gonial angle