The Collaborative International Dictionary of English v.0.48:

Turcoman \Tur"co*man\, pr. n.; pl. Turcomans.
   1. A member of a tribe of Turanians inhabiting a region east
      of the Caspian Sea.
      [1913 Webster]

   2. A Turcoman carpet.
      [1913 Webster]

   Turcoman carpet or Turcoman rug, a kind of carpet or rug
      supposed to be made by the Turcomans.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Turcoman
    n 1: a member of a Turkic people living in Turkmenistan and
         neighboring areas [syn: Turkoman, Turkmen, Turcoman]
    2: the Turkic language spoken by the Turkoman [syn: Turkmen,
       Turkoman, Turcoman]