The Collaborative International Dictionary of English v.0.48:

mesa \me"sa\ (m[asl]"s[.a]), n. [Sp.]
   A high tableland; a plateau on a hill. [Southwestern U.S.]
   --Bartlett.
   [1913 Webster]

WordNet (r) 3.0 (2006):

mesa
    n 1: flat tableland with steep edges; "the tribe was relatively
         safe on the mesa but they had to descend into the valley
         for water" [syn: mesa, table]
    2: a city in Arizona just to the east of Phoenix; originally a
       suburb of Phoenix

Moby Thesaurus II by Grady Ward, 1.0:

58 Moby Thesaurus words for "mesa":
   alkali flat, alluvial plain, basin, bench, bottomland, bushveld,
   campo, champaign, champaign country, coastal plain, delta, desert,
   down, downs, fell, flat, flat country, flatland, flats, grass veld,
   grassland, heath, lande, level, llano, lowland, lowlands,
   lunar mare, mare, mesilla, moor, moorland, open country, pampa,
   pampas, peneplain, plain, plains, plateau, playa, prairie,
   salt flat, salt marsh, salt pan, savanna, sebkha, steppe, table,
   table mountain, tableland, tree veld, tundra, upland, vega, veld,
   weald, wide-open spaces, wold



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

MESA
       MetaEmailSearchAgent (WWW, Internet)


The Free On-line Dictionary of Computing (30 December 2018):

Mesa

   Xerox PARC, 1977.  System and application programming for
   proprietary hardware: Alto, Dolphin, Dorado and Dandelion.
   Pascal-like syntax, ALGOL68-like semantics.  An early version
   was weakly typed.  Mesa's modules with separately compilable
   definition and implementation parts directly led to Wirth's
   design for Modula.  Threads, coroutines (fork/join),
   exceptions, and monitors.  Type checking may be disabled.
   Mesa was used internally by Xerox to develop ViewPoint, the
   Xerox Star, MDE, and the controller of a high-end copier.  It
   was released to a few universitites in 1985.  Succeeded by
   Cedar.

   ["Mesa Language Manual", J.G.  Mitchell et al, Xerox PARC,
   CSL-79-3 (Apr 1979)].

   ["Early Experience with Mesa", Geschke et al, CACM
   20(8):540-552 (Aug 1977)].


U.S. Gazetteer Counties (2000):

Mesa -- U.S. County in Colorado
   Population (2000):    116255
   Housing Units (2000): 48427
   Land area (2000):     3327.745916 sq. miles (8618.821990 sq. km)
   Water area (2000):    13.360946 sq. miles (34.604691 sq. km)
   Total area (2000):    3341.106862 sq. miles (8653.426681 sq. km)
   Located within:       Colorado (CO), FIPS 08
   Location:             39.095228 N, 108.509096 W
   Headwords:
    Mesa
    Mesa, CO
    Mesa County
    Mesa County, CO


U.S. Gazetteer Places (2000):

Mesa, AZ -- U.S. city in Arizona
   Population (2000):    396375
   Housing Units (2000): 175701
   Land area (2000):     124.987397 sq. miles (323.715859 sq. km)
   Water area (2000):    0.195129 sq. miles (0.505382 sq. km)
   Total area (2000):    125.182526 sq. miles (324.221241 sq. km)
   FIPS code:            46000
   Located within:       Arizona (AZ), FIPS 04
   Location:             33.411199 N, 111.746438 W
   ZIP Codes (1990):     85201 85202 85203 85204 85205 85206
                         85207 85208 85210 85213
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Mesa, AZ
    Mesa


U.S. Gazetteer Places (2000):

Mesa, CA -- U.S. Census Designated Place in California
   Population (2000):    214
   Housing Units (2000): 91
   Land area (2000):     3.574506 sq. miles (9.257927 sq. km)
   Water area (2000):    0.153968 sq. miles (0.398775 sq. km)
   Total area (2000):    3.728474 sq. miles (9.656702 sq. km)
   FIPS code:            47013
   Located within:       California (CA), FIPS 06
   Location:             37.421647 N, 118.544166 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Mesa, CA
    Mesa


U.S. Gazetteer Places (2000):

Mesa, WA -- U.S. city in Washington
   Population (2000):    425
   Housing Units (2000): 111
   Land area (2000):     1.581697 sq. miles (4.096576 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    1.581697 sq. miles (4.096576 sq. km)
   FIPS code:            45180
   Located within:       Washington (WA), FIPS 53
   Location:             46.576963 N, 119.002516 W
   ZIP Codes (1990):     99343
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Mesa, WA
    Mesa