noun Any of several species of trees of the genus Aesculus. Aesculus hippocastanum (horse chestnut).
noun Aesculus hippocastanum (horse chestnut).
noun Any of several species of the related Mexican buckeye (genus Ungnadia).
noun Seed or fruit of these plants.
noun A native or resident of the American state of Ohio.
noun Any member of the species Junonia coenia of butterflies; a common buckeye.
noun A confection made from peanut butter fudge partially dipped in chocolate to leave a circle of peanut butter visible, supposed to resemble the nut of the Ohio buckeye tree.