1. 7 European sedge having small edible nutlike tubers.

2. The hulled seeds, Creamy or pearly white and tiny, have a mild, nutlike aroma and taste

3. Buckeye definition is - any of various shrubs or trees (genus Aesculus) of the horse-chestnut family; also : the large nutlike seed of such a shrub or tree.

4. Acetal definition, a colorless, volatile, sparingly water-soluble liquid, C6H14O2, having a nutlike aftertaste, obtained from Acetaldehyde and ethyl alcohol: used chiefly as a solvent and in the manufacture of perfumes