dog screw
Mechanics
noun
Any of several kinds of screw, as one with a flat head that extends beyond the width of the shaft, or a grub screw.
Origin
Mid 19th century; earliest use found in U.S. Patents.
| 单词 | dog screw |
| 释义 | dog screwMechanics noun Any of several kinds of screw, as one with a flat head that extends beyond the width of the shaft, or a grub screw. Origin |
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