mensa

name

1. Mensa International, an organization for people with very high IQs.
2. A summer constellation of the southern sky, originally named after Table Mountain in South Africa. It lies between the constellations of Hydrus and Volans.

noun

1. In planetary geology, a large mesa-like area of raised land.
2. The upper surface of an altar.

   “Some churches also have an altar stone, a separate stone set into the mensa containing a relic of a saint, although this is becoming extremely rare.”