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]WordNet (r) 3.0 (2006):
coir n 1: stiff coarse fiber from the outer husk of a coconut