The quality of being core.

Applied to various (often specialised and underground) genres of music and subcultures.

(mathematics) The dual of a ring.

simple past tense and past participle of core

present participle of core

The production of a core by means of drilling

(automotive, machinery, aviation, marine) A deposit paid by the purchaser of a rebuilt part, to be refunded on return of a used, rebuildable part, or the returned rebuildable part itself.

The central part of a fruit, containing the kernels or seeds. / The heart or inner part of a physical thing. / The anatomical core, muscles which bridge abdomen and thorax.

Forming the most important or essential part.

To remove the core of an apple or other fruit. / To cut or drill through the core of (something). / To extract a sample with a drill.