n.a threaded nut with winglike projections for thumb and forefinger leverage in turning
同义词:wing nutwing-nutwing screwbutterfly nut
权威例句
Thumbnut constructionThumb nut.File:Thumb Nut on Bed.jpgTest switch cover assemblyRotating camera mount with counterweightBicycle tensioning deviceThreaded thumbnuts.(Products)Transfer scaled calipersMy invention relates to improvementso in stereofluoroscopic X-ray apparatus; and the objects of my improvement are to afford substan...Viewing device to minimize parallax