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wing-nut

资料来源 : WordNet®

wing-nut
     n 1: any tree of the genus Pterocarya; fruit is a small winged
          nutlet; Caucasus to southeastern Asia [syn: {wing nut}]
     2: a threaded nut with winglike projections for thumb and
        forefinger leverage in turning [syn: {wing nut}, {wing
        screw}, {butterfly nut}, {thumbnut}]
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