noun / adjective / verb
core
KOR/kɔːr/
The central part on which surrounding parts depend.
The halved apple exposes its fibrous core and central seed chambers.

Etymology
Core probably comes from Latin “heart” through a French word also used for the inner part of fruit. That image makes the core of something its innermost or most essential part.
In context
the core of a fingerprint right here in the center is the innermost recurve at the center of the pattern
More examples
- She cuts the apple in half and removes the core.
- I core the pears before baking them.
- The program teaches core skills in reading and math.
Forms
core · cores · cored · coring
corer noun — A tool that removes fruit centers.