ショウ, わら.う, え.む, えみ

laugh

JLPT3 G4 S10 F913

As per # (slender and limber) + bamboo → slender, flexible bamboo. came to assume the meanings of a separate character that added mouth and meant the same thing as the predecessor of (open the mouth slightly in smiling/laughing) → *smile*; *laugh*.

[Full Kanji Etymology List]