Noun wing nut has 2 senses
  1. wing nut, wing-nut - any tree of the genus Pterocarya; fruit is a small winged nutlet; Caucasus to southeastern Asia
    --1 is a kind of nut tree
    --1 is a member of Pterocarya, genus Pterocarya
    --1 has particulars: Caucasian walnut, Pterocarya fraxinifolia
  2. wing nut, wing-nut, wing screw, butterfly nut, thumbnut - a threaded nut with winglike projections for thumb and forefinger leverage in turning
    --2 is a kind of nut
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