mainspring

mainspring
[ˈmeɪnsprɪŋ]
sustantivo
1muelle (m) real, resorte (m) principal (of clock, watch); móvil (m) principal (sentido figurado) (of change, revolution)

mainspring [mein-spring]
sustantivo
1Muelle real (de reloj, etc.).

mainspring [ˈmeɪnsprɪŋ]
noun
[of watch] muelle real; (m) motivo principal; (m) principal resorte; (m)

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clumsy, uncoordinated; slow, dim-witted