冠
カン, かんむり, か, かっぷ, まさる

crown, best, peerless

JLPT1 G7 S9 F1503

As per 元# (rounded/oval head) + an element combining 冖 cover and 寸 hand/action indicator → object placed on and adhering to the head → *crown*.

[Full Kanji Etymology List]