n. The edible substance contained in the shell of a nut or the stone of a fruit.n. Technically, in botany: In phanerogams, strictly, the whole body of a seed within the coats, namely, the embryo, and, when present, the albumen.n. In pyrenomycetous fungi, in old usage, all of the soft parts of the pyrenocarp or perithecium within the firm outer wall. In both these senses a synonym of nucleus.n. A gramineous seed with its husk or integument; a grain or corn: as, a kernel of wheat, oats, or maize: formerly applied also to the seed of the apple and other pulpy fruits.n. The bundle of fat on the fore shoulder; any swelling or knob of flesh.n. Figuratively — The central part of anything; a mass around which other matter is concreted; a nucleus in general.n. The important part of anything, as a matter in discussion; the main or essential point, as opposed to matters of less import; the core; the gist: as, to come to the kernel of the question.To harden or ripen into kernels, as the seeds of plants.n. A battlement.To crenelate.n. An enlarged lymphatic gland.n. In metallurgy, a nucleus of a double sulphid of copper and iron obtained in roasting cupriferous iron pyrites. The kernels are separated by hand from the lumps of pyrites and are melted for copper.