Probably from Middle Low German schelf 'ledge,' entering English through East Anglian trade dialects.
A flat horizontal surface fixed to a wall or forming part of a unit, used for storing or displaying objects.
Probably from Middle Low German schelf 'shelf, ledge,' related to Old English scylfe 'ledge, floor.' The exact transmission path is debated, but the word likely entered mainstream English from East Anglian dialect influenced by Low German-speaking traders. Key roots: *(s)kel- (Proto-Indo-European: "to cut").
The geological term 'continental shelf' borrows the furniture word — the shallow seabed around a continent was named by analogy to a ledge projecting from a wall.