The Collaborative International Dictionary of English v.0.48:
Grume \Grume\ (gr[udd]m), n. [OF. grume, cf. F. grumeau a little heap, clot of blood, dim. fr. L. grumus.] A thick, viscid fluid; a clot, as of blood. --Quincy. [1913 Webster]WordNet (r) 3.0 (2006):
grume n 1: a thick viscous liquid 2: a semisolid mass of coagulated red and white blood cells [syn: blood clot, grume]