shaped crown, katakana u radical (no. 40)
宀 is a radical shape resembling a roof or crown, used as a component in many kanji. As a standalone character, it has no clear independent meaning beyond its role as a radical.
宀 is a pictograph of a roof or building, often used as a semantic component in characters related to houses or shelter. Its exact historical development as a standalone character is limited, as it primarily functions as a radical.
Picture the three strokes as a simple roof with a central ridge and sloping sides, like a crown over a building.
For ベン, imagine a bent roof: bent -> ベン, and the roof shape 宀 is slightly bent at the top.
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"roof" kanji radical (radical 40)