Source : WordNet®

Pecos
     n : a tributary of the Rio Grande that flows southeastward from
         New Mexico through western Texas [syn: {Pecos River}]

Source : Free On-Line Dictionary of Computing

PECOS
     
        A {constraint}-based language, built on the {object-oriented}
        module of {Le-Lisp}.
     
        ["Pecos Reference Manual", ILOG, 1990.  ILOG, 12 av Raspail,
        BP 7, F94251 Gentilly, France].
     
        (1995-01-26)