This rare kanji has no clear standalone meaning. Treat its meaning as uncertain.
軁 combines 身 (body) with 婁, but the exact historical development and original meaning are uncertain.
The body radical 身 beside 婁 suggests something related to the body, but the specific meaning is unclear.
For ロウ, imagine a low, stooped body: low -> ロウ, and the body radical 身 hints at a physical posture.