ledge /ledʒ/ BrE AmE noun [countable]
[ Date: 1500-1600 ; Origin: Perhaps from legge , an early form of ↑ lay 1 ]
1 . a narrow flat piece of rock that sticks out on the side of a mountain or cliff:
We crept carefully along the narrow ledge.
He leapt onto a ledge of rock.
2 . a narrow shelf:
There’s some money on the window ledge (=narrow shelf below the window) .