Definition of mainspring
The word mainspring uses 10 letters: a, g, i, i, m, n, n, p, r, s
mainspring is playable in:
Words With Friends20
Scrabble US15
Scrabble UK15
Meanings of mainspring
n. - The principal or most important spring in a piece of mechanism, especially the moving spring of a watch or clock or the spring in a gunlock which impels the hammer. Hence: The chief or most powerful motive; the efficient cause of action.
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