kernel – 1. the edible part of a nut that is inside the shell 2. the central or most important part of something

(Pronounced ker-nuhl)

To remember the definition of the word kernel, use the following mnemonic:

The colonel (kernel) could only eat the edible part of the nut. Although the shell is the most important part of the nut for protection, it is awfully rough to eat.

Examples of kernel in a sentence (1. the edible part of a nut that is inside the shell)

He couldn't crack the shell to get to the kernel. 

She opened the shell to find there was no kernel inside.

They seperated the kernels and the shells to make the nuts easier to eat. 

Examples of kernel in a sentence (2. the central or most important part of something)

His invention was the kernel of the entire plan. 

Their shared hobby was the kernel of their friendship. 

The engine was the kernel of the machine.