Definition of "vigour"

vigour

/ˈvɪɡə/

noun
countable and uncountable, plural vigours
1. Active strength or force of body or mind; capacity for exertion, physically, intellectually, or morally; energy.
  Quotations
  The vigour of this arm was never vain
  1717, John Dryden (tr.), Metamorphoses By Ovid‎, Book the Twelfth
2. (biology) Strength or force in animal or vegetable nature or action.
3. Strength; efficacy; potency.
  Quotations
  But in the fruithful earth: there first receiv'd / His beams, unactive else, their vigour find.
  1667, John Milton, “(please specify the book number)”, in Paradise Lost. […], London: […] [Samuel Simmons], […]; republished as Paradise Lost in Ten Books: […], London: Basil Montagu Pickering […], 1873,