1. The Lord's table or altar.
2. A frontal to an altar; e.g. one given to Glastonbury in 1071, made of gold, silver, and ivory, and one at St. Alban's in the 12th century.
3. The mensa, the upper stone altar-slab.
4. Pensilis, containing the names of benefactors, registers of miracles, a list of indulgences, and the course of officiants, officiating clergy at the hours, and celebrants of masses.