hermit
僊 centers on a person who withdraws from society to live in solitude, often for spiritual reasons: a hermit.
僊 combines the person radical 亻 with 䙴, which likely contributes the sound and may relate to rising or moving away, fitting the idea of a hermit who withdraws from the world. The exact historical development of 䙴 is uncertain.
A person 亻 beside the complex shape 䙴 (which looks like a piled-up structure) suggests someone who has piled up their belongings and left society to live alone as a hermit.
For セン, picture a hermit sending a single smoke signal from the mountain: send -> セン, and the hermit's solitary life is signaled by that one plume.
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