Definition of cup leather
: a packing (as in hydraulic cylinders and pumps) that consists of a ring of leather of a U-shaped or cup-shaped cross section and that is made tight by the pressure of the fluid on the hollow side
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
Ask the Editors
- On Contractions of Multiple Words
- A Look at Uncommon Onomatopoeia
- Is Singular 'They' a Better Choice?