- a small group of indispensable persons or things
- the center of an object
- the central part of the Earth
- the choicest or most essential or most vital part of some idea or experience
💬 Examples
- "five periodicals make up the core of their publishing program"
- "the ball has a titanium core"
- "the gist of the prosecutor's argument"
- "the heart and soul of the Republican Party"