clot / klät/ • n. a thick mass of coagulated liquid, esp. blood, or of material stuck together: a flat, wet clot of dead leaves | fig. a clot of people. • v. (clot·ted, clot·ting) form or cause to form into clots: [intr.] drugs that help blood to clot | [tr.] a blood protein known as factor VIII clots blood. ∎  [tr.] cover (something) with sticky matter: its nostrils were clotted with blood.

clot lump, esp. one formed by coagulation. OE. clot(t) = MHG. kloz (G. klotz) :- WGmc. *klutt-, f. *klut- *kleut- *klaut-; Cf. CLEAT, CLOUT.