The Collaborative International Dictionary of English v.0.48:

Honesty \Hon"es*ty\, n. [OE. honeste, oneste, honor, OF.
   honest['e], onest['e] (cf. F. honn[^e]tet['e]), L. honestas.
   See Honest, a.]
   1. Honor; honorableness; dignity; propriety; suitableness;
      decency. [Obs.] --Chaucer.
      [1913 Webster]

            She derives her honesty and achieves her goodness.
                                                  --Shak.
      [1913 Webster]

   2. The quality or state of being honest; probity; fairness
      and straightforwardness of conduct, speech, etc.;
      integrity; sincerity; truthfulness; freedom from fraud or
      guile.
      [1913 Webster]

            That we may lead a quiet and peaceable life in all
            godliness and honesty.                --1 Tim. ii.
                                                  2.
      [1913 Webster]

   3. Chastity; modesty. --Chaucer.
      [1913 Webster]

            To lay . . . siege to the honesty of this Ford's
            wife.                                 --Shak.
      [1913 Webster]

   4. (Bot.) Satin flower; the name of two cruciferous herbs
      having large flat pods, the round shining partitions of
      which are more beautiful than the blossom; -- called also
      lunary and moonwort. Lunaria biennis is common
      honesty; Lunaria rediva is perennial honesty.

   Syn: Integrity; probity; uprightness; trustiness;
        faithfulness; honor; justice; equity; fairness; candor;
        plain-dealing; veracity; sincerity.
        [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Lunaria \Lunaria\ prop. n.
   A small genus of European herbs of the mustard family,
   including the herb honesty (Lunaria annua), which is also
   called moonwort and lunary.

   Syn: genus Lunaria.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

honesty
    n 1: the quality of being honest [syn: honesty, honestness]
         [ant: dishonesty]
    2: southeastern European plant cultivated for its fragrant
       purplish flowers and round flat papery silver-white seedpods
       that are used for indoor decoration [syn: honesty, silver
       dollar, money plant, satin flower, satinpod, Lunaria
       annua]

Moby Thesaurus II by Grady Ward, 1.0:

91 Moby Thesaurus words for "honesty":
   absolute realism, artlessness, assured probity, authenticity,
   blamelessness, bluntness, bona fideness, candor, character,
   cleanness, conscientiousness, decency, dependability, directness,
   disinterestedness, equitableness, equity, erectness, estimableness,
   fairness, forthrightness, frankness, genuineness, good character,
   goodness, guilelessness, high ideals, high principles,
   high-mindedness, honor, honorableness, immaculacy, impartiality,
   inartificiality, incorruption, ingenuousness, integrity,
   irreproachability, irreproachableness, justice, justness,
   legitimacy, lifelikeness, literalism, literality, literalness,
   moral excellence, moral strength, morality, naturalism,
   naturalness, nobility, objectivity, openness, outspokenness,
   photographic realism, principles, probity, pureness, purity,
   realism, realness, rectitude, reliability, reputability,
   respectability, righteousness, scrupulousness, sincerity,
   stainlessness, straightforwardness, true-to-lifeness,
   trustworthiness, truth to nature, truthfulness, unadulteration,
   unaffectedness, unfictitiousness, unimpeachability,
   unimpeachableness, unspeciousness, unspottedness, unspuriousness,
   unsyntheticness, uprightness, upstandingness, veracity,
   verisimilitude, virtue, virtuousness, worthiness



Bouvier's Law Dictionary, Revised 6th Ed (1856):

HONESTY. That principle which requires us to give every one his due. Nul ne
doit slenrichir aux de ens du droit d'autrui.
     2. The very object of social order is to promote honesty, and to
restrain dishonesty; to do justice and to prevent injustice. It is no less a
maxim of law than of religion, do unto others as you wish to be done by.