- a large mass of rock thrust a considerable distance along a nearly horizontal fault plane or in an overturned anticlinal fold.
- one of the two equal sections of a cone.
- a large sheet or mass of rock, commonly a recumbent fold, that has been thrust from its original position by earth movements
- the sheet of water that flows over a dam or weir
- either of the two parts into which a cone (sense 2) is divided by the vertex
