This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
磖 is a rare character composed of 石 (stone) and 習. The exact historical development is uncertain.
The left side is stone 石, and the right side is 習 (learn). Without a clear meaning, picture a stone tablet used for learning, but remember its meaning is uncertain.
For ロウ, imagine a low stone wall where people learn: low -> ロウ, and the stone 石 is part of the scene.
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