Meaning of KERNEL in English

n. 1 a central, softer, usu. edible part within a hard shell of a nut, fruit stone, seed, etc. 2 the whole seed of a cereal. 3 the nucleus or essential part of anything.

[ OE cyrnel, dimin. of CORN(1) ]

Concise Oxford English dictionary.      Краткий оксфордский словарь английского языка.