The term 'STOPPAGE BLOOD FLOW' can be summarized by the crossword solution 'CLOT', which is a four-letter word. A CLOT is a mass of blood cells and proteins that forms when the body's natural clotting process is activated. Clots can form in the veins or arteries, blocking the flow of blood and causing a stoppage of blood flow. Clots can be dangerous if they travel to other parts of the body, such as the lungs or brain, and can cause serious health complications.