翫
ガン, もてあそ.ぶ

take pleasure in, play instrument

JLPT0 G13 S0 F2134

As per 元# (round) + 習 learn (specifically, learn by repetition) → smooth out the rough edges of an action by repeated practice → *enjoy*; *take pleasure in* (← enjoy obtaining perfection). Compare 玩.

[Full Kanji Etymology List]