The Collaborative International Dictionary of English v.0.48:

Merino \Me*ri"no\, n.; pl. Merinos. [Sp.]
   1. (Zool.) A breed of sheep originally from Spain, noted for
      the fineness of its wool.
      [1913 Webster]

   2. A fine fabric of merino wool.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Merino \Me*ri"no\, a. [Sp. merino moving from pasture to
   pasture, fr. merino a royal judge and superintendent or
   inspector of sheep walks, LL. merinus, fr. majorinus, i. e.,
   major vill?, fr. L. major greater. See Major. Merino sheep
   are driven at certain seasons from one part of Spain to
   another, in large flocks, for pasturage.]
   1. Of or pertaining to a variety of sheep with very fine
      wool, originally bred in Spain.
      [1913 Webster]

   2. Made of the wool of the merino sheep.
      [1913 Webster]

WordNet (r) 3.0 (2006):

merino
    n 1: white sheep originating in Spain and producing a heavy
         fleece of exceptional quality [syn: merino, merino
         sheep]

U.S. Gazetteer Places (2000):

Merino, CO -- U.S. town in Colorado
   Population (2000):    246
   Housing Units (2000): 110
   Land area (2000):     0.173003 sq. miles (0.448076 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.173003 sq. miles (0.448076 sq. km)
   FIPS code:            50040
   Located within:       Colorado (CO), FIPS 08
   Location:             40.484418 N, 103.353691 W
   ZIP Codes (1990):
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Merino, CO
    Merino