Pig·nut n. Bot. (a) See Groundnut (d). (b) The bitter-flavored nut of a species of hickory (Carya glabra syn. Carya porcina); also, the tree itself.
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Hick·o·ry n. Bot. An American tree of the genus Carya, of which there are several species. The shagbark is the Carya alba, and has a very rough bark; it affords the hickory nut of the markets. The pignut, or brown hickory, is the Carya glabra. The swamp hickory is Carya amara, having a nut whose shell is very thin and the kernel bitter.
Hickory shad. Zool. (a) The mattowacca, or fall herring. (b) The gizzard shad.
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Carya glabra
n : an American hickory tree having bitter nuts [syn: pignut,
pignut hickory, brown hickory, black hickory]