Mainspring Definition
mānsprĭng
mainsprings
noun
The principal spring in a clock, watch, or other mechanism; driving spring, whose steady uncoiling keeps the mechanism running.
Webster's New World
The chief motive or cause.
Webster's New World
(figuratively) The most important reason for something.
My daughter is the mainspring of my life.
Wiktionary
Other Word Forms of Mainspring
Noun
Singular:
mainspring
Plural:
mainspringsMainspring Is Also Mentioned In
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