steep slope, (kokuji)
圸 centers on a steep slope, combining earth and mountain to suggest a sharp incline. It is a Japanese-made kokuji with no extended abstract meanings.
圸 is a Japanese kokuji created by combining 土 (earth) and 山 (mountain) to represent a steep slope. It has no ancient Chinese origin.
Picture earth 土 piled up against a mountain 山, forming a dangerously steep slope.
For まま, imagine a steep slope so treacherous that you can only climb it with your mama's help: mama -> まま.
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