Sub-sĕl'li-ŭm, n.

noun

n.; pl. SUB-SĔL'LI-A. [Lat.] (Eccl. Arch.) A small shelving seat in the stalls of churches or cathedrals, used either as a seat or as a form to kneel on; — called also miserere. Fosbroke.

An engraved illustration of an ornate wooden choir stall with a carved seat and high back. — Subsellium.