[grog-ruh
m] 
| a coarse fabric of silk, of silk and mohair or wool, or of wool, formerly in use. |
| grog·ram (grŏg'rəm, grō'grəm) n. A coarse, often stiffened fabric made of silk, mohair, wool, or a blend of them. [Alteration of French gros grain, coarse texture; see grosgrain.] |