Definition of Embolus

In case of wounds is a product of coagulation of the blood or blood clot. A plug which floats along until it becomes lodged so as to obstruct the passage of the blood. It consists usually of a clot or fibrin, a shred from a morbid growth, a globule of fat, air bubbles, or a microorganism. An embolus or floating particle by attaching itself or becoming wedged may form a thrombosis or occlusion.

That's the definition of Embolus in Black's Law Dictionary 6th Edition. Courtesy of Cekhukum.com.