0 the part of a nut that is inside the shell and can be eaten --
1 the most important part of something, although it might not always be easy to find: --
There is often a kernel of truth in what they say.
2 the edible part of a nut that is inside the shell, or the whole seed of a grain plant: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Можем да го завършим стъпка по стъпка, колкото и дълъг да е пътят и не може да бъде завършен, колкото и кратък да е пътят, ако дори не маркирате отпечатъка си.