clump

In Parkinson's disease, this protein sticks together into toxic clumps that cause nerve cell death and leads to patients suffering from symptoms such as tremors, difficulties moving and muscle stiffness.

Digging a healthy clump of potatoes from the rich, black soil, Craig says, "potatoes are an amazing crop. You can't knock that, but we know things need to change."

The team spotted Poncho under a clump of brush and found Crosby asleep on the ground nearby.

Dead fish began washing ashore in clumps, all tangled in thick mats of toxic algae.

He threw her on to the floor, pulled out a large clump of her hair and spat in her face.