山やま冠かんむり

noun

kanji "mountain" radical at top

Refers specifically to the 山 radical when it appears at the top of a kanji, such as in 岩, 岸, or 峠. Used in kanji instruction and dictionary contexts.

• 「岩いわ」という漢かん字じの上うえの部ぶ分ぶんは山やま冠かんむりです。