The flat surface of an organ, as a leaf, any flat, round growth.
A vinyl phonograph / gramophone record.
An intervertebral disc.
Venus's disc cut off light from the Sun.
Something resembling a disc.
A thin, flat, circular plate or similar object.
To move towards, or operate at, zero blade pitch, orienting the propeller blades face-on to the oncoming airflow and maximising the drag generated by the propeller.
To harrow with a disc harrow.
Minute membranous scales on the surface of some leaves, as in the goosefoot.
A grey bull trout (Salvelinus confluentus).
The foul remains of anything adherent.
A skin disease.
The flakes of skin that fall off as a result of a skin disease.
Any crust-like formations on the skin, or in general.