1. The quality or state of being strong; ability to do or to bear; capacity for exertion or endurance, whether physical, intellectual, or moral; force; vigor; power; as, strength of body or of the arm; strength of mind, of memory, or of judgment. All his [Samson's] strength in his hairs were. (Chaucer) Thou must outlive thy youth, thy strength, thy beauty. (milton)
2. Power to resist force; solidity or toughness; the quality of bodies by which they endure the application of force without breaking or yielding; in this sense opposed to frangibility; as, the strength of a bone, of a beam, of a wall, a rope, and the like. The brittle strength of bones.
4. That quality which tends to secure results; effective power in an institution or enactment; security; validity; legal or moral force; logical conclusiveness; as, the strength of social or legal obligations; the strength of law; the strength of public opinion; strength of evidence; strength of argument.
5. One who, or that which, is regarded as embodying or affording force, strength, or firmness; that on which confidence or reliance is based; support; security. God is our refuge and strength. (Ps. Xlvi. 1) What they boded would be a mischief to us, you are providing shall be one of our principal strengths. (sprat) Certainly there is not a greater strength against temptation. (Jer. Taylor)
10. A strong place; a stronghold. On, or Upon, the strength of, in reliance upon. The allies, after a successful summer, are too apt, upon the strength of it, to neglect their preparations for the ensuing campaign. .
Origin: OE. Strengthe, AS. Strengu, fr. Strang strong. See Strong.