grogram n 1: a coarse fabric of silk mixed with wool or mohair and often stiffened with gum
Grogram \Grog"ram\, Grogran \Grog"ran\, n. [OF. gros-grain, lit., gros-grain, of a coarse texture. See {Gross}, and {Grain} a kernel, and cf. {Grog}.] A coarse stuff made of silk and mohair, or of coarse silk. [1913 Webster]