Something which obstructs or impedes, either intentionally or unintentionally
The act of obstructing, or state of being obstructed.
The condition of having the natural powers obstructed in their usual course; the arrest of the vital functions; death.
A blood clot formed from platelets and other elements that forms in a blood vessel in a living organism, and causes thrombosis or obstruction of the vessel at its point of formation or travel to other areas of the body.