hand screw

hand screw

noun
1.
a screw that can be tightened by the fingers, without the aid of a tool.
2.
Also called hand-screw clamp. Carpentry. a clamp having two wooden jaws that are adjusted by two long screws.


Origin:
1755–65
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Hand screw is always a great word to know.
So is ninnyhammer. Does it mean:
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
a fool or simpleton; ninny.
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