The ait (Avena sativa) or great corn is a species o cereal grain growen for its seed, that's aften kent bi the same name (for ordinar in the plural).
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Avena fatua wild aits, wild corn, pecht aits or haver, tho the name haver is aften uised for Avena sativa.
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Avena strigosa The gray-beardit ait or smaw corn, kent as shiocks Aiberdeen awa.