Noah Webster
Kernel
KERN'EL, noun
1. The edible substance contained in the shell of a nut.
2. Any thing included in a shell, husk or integument; a grain or corn; as a kernel of wheat or oats.
3. The seed of pulpy fruit; as the kernel of an apple.
4. The central part of any thing; a small mass around which other matter is concreted; a nucleus.
5. A hard concretion in the flesh.
KERN'EL, verb intransitive To harden or ripen into kernels; as the seeds of plants.