all, complete, entire
圇 centers on wholeness and completeness: something that is all-encompassing, entire, or without missing parts.
圇 combines the enclosure 囗 with 侖, which likely contributes the sound and the idea of order or completeness. The exact historical development is uncertain, but the structure suggests a phono-semantic compound where 囗 frames the concept of wholeness.
The outer 囗 is a boundary that contains everything inside. The inner 侖 looks like a neatly arranged set of items, all present and accounted for. Together, 圇 means all, complete, entire.
For リン, imagine a complete ring (リン) that encircles everything: ring -> リン, and the enclosure 囗 holds the whole ring inside.
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