Meaning of “core” - Learner’s Dictionary


noun us uk /kɔːr/
IMPORTANT PART [ no plural ]

the most important part of a system or principle:

core values
Better health care was at the core of the senator's campaign.

the hard, central part of certain fruits, such as apples, which contains the seeds

PLANET [ no plural ]

the centre of a planet:

the Earth's core
→ See also hard core

(Definition of “core” from the Cambridge Learner’s Dictionary © Cambridge University Press)