ledge

Short definition from Wiktionary

Noun

1. 1
   A narrow surface projecting horizontally from a wall, cliff, or other surface.
2. 2
   A shelf on which articles may be laid.
3. 3
   A shelf, ridge, or reef, of rocks.
4. 4
   A layer or stratum.
5. 5
   A lode; a limited mass of rock bearing valuable mineral.
6. 6
   A (door or window) lintel.
7. 7
   A cornice.
8. 8
   A piece of timber to support the deck, placed athwartship between beams.
9. 9
   Alternative form of lege (“a legend; a person held in high regard”).
10. 10
    A provincial or territorial legislature building.
11. 11
    A provincial or territorial legislative assembly.

Verb

1. 1
   To cause to have, or to develop, a ledge (during mining, canal construction, building, etc).