from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A tomb in an arched recess in a wall.
from The Century Dictionary and Cyclopedia
- n. A name given to certain recesses for dead bodies in the Roman catacombs, consisting of a deep niche cut in the rocky wall and arched above, a sarcophagus being hewn from the rock under the arch.
From Latin arcus ("arc, arch") and solium ("sill, place of state"). (Wiktionary)