kernel
Nouns
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(n) the inner and usually edible part of a seed or grain or nut or fruit stone
- black walnut kernels are difficult to get out of the shell
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(n) a single whole grain of a cereal
- a kernel of corn
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(n) the choicest or most essential or most vital part of some idea or experience
- the gist of the prosecutor's argument
- the heart and soul of the Republican Party
- the nub of the story