Flat-topped, steep-sided plateau, consisting of horizontal weak layers of rock topped by a resistant formation; in particular, those found in the desert areas of the us and Mexico. A small mesa is called a butte.
Flat tableland with steep edges; SYN. table.
An area of a germanium or silicon wafer that was protected during the etching process and is therefore higher than the surrounding etched areas. See also photolithography.

1. City in Arizona (USA).
2. Town in Washington (USA); zip code 99343.