Kernel

caroço

((US) stone of certain fruits, such as peaches or plums)

cerne

(core or essence of an object or system)

grão

(single seed of corn or wheat)

kernel

((computing) central part of many computer operating systems)

miolo

(central part of a nut)

núcleo

((computing) central part of many computer operating systems)

núcleo

((mathematics, algebra) set of elements mapped to zero)