What does "stamina" mean?

Stamina: The fixed, firm part of a body, which supports it or gives it strength and solidity; as, the bones are the stamina of animal bodies; the ligneous parts of trees are the stamina which constitute their strength.

Additional senses

  1. 2.Whatever constitutes the principal strength or support of anything; power of endurance; backbone; vigor; as, the stamina of a constitution or of life; the stamina of a State. He succeeded to great captains who had sapped the whole stamina and resistance of the contest. De Quincey.

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