clot

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A thick, viscous, or coagulated mass or lump, as of blood.
• noun A clump, mass, or lump, as of clay.
• noun A compact group.
• intransitive verb To form into a clot or clots; coagulate.
• intransitive verb To cause to form into a clot or clots.
• intransitive verb To fill or cover with or as if with clots.

from The Century Dictionary.

• noun A dialectal variant of clote. Compare clot-bur.
• To coagulate, as soft or fluid matter, into a thick inspissated mass; become concrete: as, milk or blood clots.
• To form into clots.
• To cause to coagulate; make or form into clots.
• To cover with clots; mat together by clots, as of blood.
• noun A clod.
• noun A hill.
• noun A dull, stupid man; a clodpoll.
• noun A concrete or coagulated mass of soft or fluid matter: as, a clot of blood or of cream.
• noun A clump.

from the GNU version of the Collaborative International Dictionary of English.

• intransitive verb To concrete, coagulate, or thicken, as soft or fluid matter by evaporation; to become a cot or clod.
• transitive verb To form into a slimy mass.
• noun A concretion or coagulation; esp. a soft, slimy, coagulated mass, as of blood; a coagulum.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A solidified mass of blood.
• noun A silly person.
• verb intransitive To form into a clot or mass
• verb transitive To cause to clot or form into a mass

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun a lump of material formed from the content of a liquid
• verb change from a liquid to a thickened or solid state
• verb cause to change from a liquid to a solid or thickened state
• verb turn into curds
• verb coalesce or unite in a mass