Intensity or degree of the distinguishing and essential
element; spirit; virtue; excellence; – said of liquors, solutions,
etc.; as, the strength of wine or of acids.

A strong place; a stronghold.

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.

Intensity; – said of light or color.

Force as measured; amount, numbers, or power of any body,
as of an army, a navy, and the like; as, what is the strength of the
enemy by land, or by sea?

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.

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 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.

Power of resisting attacks; impregnability.

Vigor or style; force of expression; nervous diction; –
said of literary work.