from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A small chapel, as a monument within a church
- n. A shrine open to the sky, sometimes used for sacrificial purposes, or in honor of the divine
from the GNU version of the Collaborative International Dictionary of English
- n. An unroofed space consecrated to a divinity.
- n. A small monumental chapel in a church.
from The Century Dictionary and Cyclopedia
- n. In Roman antiquity, a small inclosed space without a roof, consecrated to some deity, containing an altar, and sometimes also a statue of the god.
From Latin sacellum. (Wiktionary)