This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
厸 is a rare character composed of two 厶 elements side by side. Its exact historical origin and original meaning are uncertain.
Two 厶 shapes sit next to each other like neighbors. If you must assign a meaning, think of them as adjacent or neighboring, but this is a mnemonic only.
For リン, imagine two neighboring 厶 shapes linked by a thin line: link -> リン, and the two shapes are connected like neighbors.