noun
kanji radical 40 (roof crown)
Refers to the top-position kanji radical 宀, called 'u-kanmuri' because it resembles the katakana ウ with a crown shape. Used in character descriptions and dictionary lookup.
See also: 字 (じ)
「家」の上の部分はウ冠です。
The top part of the kanji 家 is the 'u-kanmuri' radical.