Em"bo*lus (?), n.; pl. Emboli (#). [L., fr. Gr. pointed so as to be put or thrust in, fr. to throw, thrust, or put in. See Emblem.]
Something inserted, as a wedge; the piston or sucker of a pump or syringe.
A plug of some substance lodged in a blood vessel, being brought thither by the blood current. It consists most frequently of a clot of fibrin, a detached shred of a morbid growth, a globule of fat, or a microscopic organism.
© Webster 1913.