Coir

from WordNet (r) 3.0 (2006)

coir
    n 1: stiff coarse fiber from the outer husk of a coconut

from The Collaborative International Dictionary of English v.0.48

Coir \Coir\ (koir), n. [Tamil kayiru.]
   1. A material for cordage, matting, etc., consisting of the
      prepared fiber of the outer husk of the cocoanut.
      --Homans.
      [1913 Webster]

   2. Cordage or cables, made of this material.
      [1913 Webster]