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Mast
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Mast

food
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Mast, in botany, nuts or fruits of trees and shrubs, such as beechnuts, acorns, and berries, that accumulate on the forest floor, providing forage for game animals and swine. Mast has also been used as human food and to fatten poultry. The phrase “a good mast year” refers to a period in which there is a heavy crop of wild nuts.