Emily Dickinson Lexicon

VIG'OR, n. [L. from vigeo, to be brisk, to grow, to be strong; allied to vivo, vixi, to live, and to Sax. wigan, to carry on war, and to wake.]

1. Active strength or force of body in animals; physical force. The vigor of this arm was never vain. – Dryden.
2. Strength of mind; intellectual force; energy. We say, a man possesses vigor of mind or intellect.
3. Strength or force in animal or vegetable motion; as, a plant grows with vigor.
4. Strength; energy; efficacy. In the fruitful earth His beams, unactive else, their vigor find. – Milton.