1. [n]  the quality of nearness to the truth or the true value; "he was beginning to doubt the accuracy of his compass"; "the lawyer questioned the truth of my account"
2. [n]  a fact that has been verified; "at last he knew the truth"; "the truth is the he didn't want to do it"
3. [n]  a true statement; "he told the truth"; "he thought of answering with the truth but he knew they wouldn't believe it"
4. [n]  United States abolitionist and feminist who was freed from slavery and became a leading advocate of the abolition of slavery and for the rights of women (1797-1883)
5. [n]  conformity to reality or actuality; "they debated the truth of the proposition"; "the situation brought home to us the blunt truth of the military threat"; "he was famous for the truth of his portraits"; "he turned to religion in his search for eternal verities"

Truth
Historian Fernandez-Armesto argues here that truth needs to be reimagined in its classic, universal sense and saved from the diminished definitions of it that contemporary thinkers have given it. Fernandez-Armesto traces the concept of truth through history and breaks it down into four categories, which he claims are universal and not time-bound.

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1. \Truth\, n.; pl. {Truths}. [OE. treuthe, trouthe, treowpe,
   AS. tre['o]w?. See {True}; cf. {Troth}, {Betroth}.]
   1. The quality or being true; as:
      (a) Conformity to fact or reality; exact accordance with
          that which is, or has been; or shall be.
      (b) Conformity to rule; exactness; close correspondence
          with an example, mood, object of imitation, or the
          like.
                Plows, to go true, depend much on the truth of
                the ironwork.                     --Mortimer.
      (c) Fidelity; constancy; steadfastness; faithfulness.
                Alas! they had been friends in youth, But
                whispering tongues can poison truth.
                                                  --Coleridge.
      (d) The practice of speaking what is true; freedom from
          falsehood; veracity.
                If this will not suffice, it must appear That
                malice bears down truth.          --Shak.
   2. That which is true or certain concerning any matter or
      subject, or generally on all subjects; real state of
      things; fact; verity; reality.
            Speak ye every man the truth to his neighbor.
                                                  --Zech. viii.
                                                  16.
            I long to know the truth here of at large. --Shak.
            The truth depends on, or is only arrived at by, a
            legitimate deduction from all the facts which are
            truly material.                       --Coleridge.
   3. A true thing; a verified fact; a true statement or
      proposition; an established principle, fixed law, or the
      like; as, the great truths of morals.
            Even so our boasting . . . is found a truth. --2
                                                  Cor. vii. 14.
   4. Righteousness; true religion.
            Grace and truth came by Jesus Christ. --John i. 17.
            Sanctify them through thy truth; thy word is truth.
                                                  --John xvii.
                                                  17.
   {In truth}, in reality; in fact.
   {Of a truth}, in reality; certainly.
   {To do truth}, to practice what God commands.
            He that doeth truth cometh to the light. --John iii.
                                                  21.
   

2. \Truth\, v. t.
   To assert as true; to declare. [R.]
         Had they [the ancients] dreamt this, they would have
         truthed it heaven.                       --Ford.
   

Used in various senses in Scripture. In Prov. 12:17, 19, it denotes that which is opposed to falsehood. In Isa. 59:14, 15, Jer. 7:28, it means fidelity or truthfulness. The doctrine of Christ is called "the truth of the gospel" (Gal. 2:5), "the truth" (2 Tim. 3:7; 4:4). Our Lord says of himself, "I am the way, and the truth" (John 14:6).