used in proper names
This rare kanji has no clear standalone meaning. It is used in proper names, so treat its meaning as uncertain.
垪 combines 土 (earth) with 并, which may have contributed sound. The exact historical development is uncertain, and the character is rare.
The left side is earth 土, and the right side 并 looks like two things joined. Picture a place name carved into the earth, marking a location.
For ハ, imagine a proper name signpost with a laughing 'Ha!' sound: Ha -> ハ, as if the name itself is laughing.
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