clot (klŏt)
n.

1. A thick, viscous, or coagulated mass or lump, as of blood.
2. A clump, mass, or lump, as of clay.
3. A compact group: a clot of automobiles blocking the tunnel's entrance.

v., clot·ted, clot·ting, clots.

v.intr.
To form into a clot or clots; coagulate.

v.tr.

1. To cause to form into a clot or clots. See synonyms at coagulate.
2. To fill or cover with or as if with clots.

[Middle English, from Old English clott, lump.]

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The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.

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