spiral spring

spiral spring

noun
a form of spring consisting of a wire coiled in a helix.


Origin:
1680–90
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Spiral spring is always a great word to know.
So is ninnyhammer. Does it mean:
a fool or simpleton; ninny.
a stew of meat, vegetables, potatoes, etc.
WordNet
spiral spring

noun
a spring that is wound like a spiral 
WordNet® 3.0, © 2006 by Princeton University.
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