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]