level spot part-way up a mountain, (kokuji)
岼 centers on a flat or level area on a mountain slope, a spot part-way up where the ground evens out.
岼 is a kokuji (Japanese-made kanji) combining 山 (mountain) and 平 (flat, level) to express a level spot on a mountain. The character was likely created by combining these two components semantically.
The left side is 山 (mountain) and the right side is 平 (flat). Picture a mountain with a flat, level spot part-way up where you can rest.
For ゆり, imagine a yurt (a round tent) set up on that level mountain spot: yurt -> ゆり, and the flat area is perfect for camping.
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