朱唇 (しゅしん, shushin) Japanese meaning: red lips | KotomoraExpressions
朱唇皓歯red lips and pearly white teeth (said of beautiful women)
脣
rarely-used kanji form
Rarely used kanji form; 脣 is a variant of 唇.
Etymology
Compound of 朱 (shu, 'vermilion, red') and 唇 (shin, 'lips').
