Definition of "disc"

disc

/dɪsk/

noun
plural discs
1. A thin, flat, circular plate or similar object.
2. (anatomy) An intervertebral disc.
3. Something resembling a disc.
  Quotations
  [A] peculiar luminous and sinuous marking appeared on the unillumined half of the inner planet, and almost simultaneously a faint dark mark of a similar sinuous character was detected upon a photograph of the Martian disc.
  1898, H.G. Wells, The War of the Worlds, London: William Heinemann, page 300
4. A vinyl phonograph / gramophone record.
5. (botany) The flat surface of an organ, as a leaf, any flat, round growth.
6. (disc sports) Ellipsis of flying disc.; Synonym of frisbee; generic name for the trademark Frisbee;
verb
third-person singular simple present discs, present participle discing, simple past and past participle disced
1. (agriculture) To harrow with a disc harrow.
  Quotations
  It is held that discing is as much value to lucerne as cultivation is to corn.
  1901 October 11, “Discing Lucerne”, in The Agricultural Journal and Mining Record‎, volume 4, number 16, page 488
2. (aviation, of a propeller) 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.