(noun.) the choicest or most essential or most vital part of some idea or experience; 'the gist of the prosecutor's argument'; 'the heart and soul of the Republican Party'; 'the nub of the story'.
(noun.) a single whole grain of a cereal; 'a kernel of corn'.
(noun.) the inner and usually edible part of a seed or grain or nut or fruit stone; 'black walnut kernels are difficult to get out of the shell'.
约翰娜编辑
黛布拉整理