The small pieces that fall to the bottom of a liquid.
Settlings are usually seen as unwanted or waste material.
Examples:
The tea had some settlings at the bottom of the cup.
After the water stopped moving, you could see the settlings in the glass.
She poured the juice carefully to avoid the settlings at the bottom.
The settlings in the jar looked like tiny grains of sand.
The settlings in the pond were so many, it looked like a small mountain.
The settlings in the bottle made the liquid look dirty.