Associations to the word «Mainspring»

Wiktionary

MAINSPRING, noun. The principal spring of a clockwork mechanism, that drives it by uncoiling.
MAINSPRING, noun. (figuratively) The most important reason for something.

Dictionary definition

MAINSPRING, noun. The most important spring in a mechanical device (especially a clock or watch); as it uncoils it drives the mechanism.

Wise words

One great use of words is to hide our thoughts.
Voltaire