from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A gallery in a church, used for all-night vigils.
from the GNU version of the Collaborative International Dictionary of English
- n. A gallery in a church, where persons watched all night.
from The Century Dictionary and Cyclopedia
- n. In architecture, a gallery in a church where public watch was formerly kept at night on the eve of some festival, and from which the great shrines were observed.
Latin excubitorium; ex out + cubare, cubitum, to lie. (Wiktionary)