shelf
UK[ʃɛlf]US[ʃɛlf]
n
A flat board, fixed horizontally to a wall or in a frame, used for storing or displaying things.
n
A thing resembling a shelf in shape or function, such as a projecting ledge of rock or a sandbank.
Etymology
The word 'shelf' originates from Middle English 'shelfe', likely derived from Old English 'scylfe', meaning a ledge or partition. Its ultimate origin is Germanic, possibly related to Old Norse 'skjölf', meaning a bench. The core concept has consistently been that of a flat, projecting surface. From its early use describing natural features like rock ledges or sandbanks, the meaning specialized to denote the domestic storage board we know today, while retaining its geological sense.
Analysis
The word 'shelf' is a simplex word of Germanic origin. It is not productively composed of smaller, separable morphemes in modern English.
Examples
She placed the book back on the shelf.
The ship ran aground on a submerged shelf.
He built a new shelf in the garage for his tools.