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|Noun||1.||wing-nut - any tree of the genus Pterocarya; fruit is a small winged nutlet; Caucasus to southeastern Asia|
Caucasian walnut, Pterocarya fraxinifolia - medium-sized Caucasian much-branched tree distinguished from other walnut trees by its winged fruit
nut tree - tree bearing edible nuts
|2.||wing-nut - a threaded nut with winglike projections for thumb and forefinger leverage in turning|
nut - a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt