Source : Webster's Revised Unabridged Dictionary (1913)

Coarse-grained \Coarse"-grained`\, a.
   Having a coarse grain or texture, as wood; hence, wanting in
   refinement.

Source : WordNet®

coarse-grained
     adj 1: composed of or covered with relatively large particles;
            "granular sugar"; "gritty sand" [syn: {farinaceous}, {grainy},
             {granular}, {granulose}, {gritty}, {mealy}, {sandy}]
     2: not having a fine texture; "coarse-grained wood"