Source : Webster's Revised Unabridged Dictionary (1913)

Favor \Fa"vor\, n. [Written also favour.] [OF. favor, F. faveur,
   L. favor, fr. favere to be favorable, cf. Skr. bh[=a]vaya to
   further, foster, causative of bh[=u] to become, be. Cf. {Be}.
   In the phrase to curry favor, favor is prob. for favel a
   horse. See 2d {Favel}.]
   1. Kind regard; propitious aspect; countenance; friendly
      disposition; kindness; good will.

            Hath crawled into the favor of the king. --Shak.

   2. The act of countenancing, or the condition of being
      countenanced, or regarded propitiously; support;
      promotion; befriending.

            But found no favor in his lady's eyes. --Dryden.

            And Jesus increased in wisdom and stature, and in
            favor with God and man.               --Luke ii. 52.

   3. A kind act or office; kindness done or granted;
      benevolence shown by word or deed; an act of grace or good
      will, as distinct from justice or remuneration.

            Beg one favor at thy gracious hand.   --Shak.

   4. Mildness or mitigation of punishment; lenity.

            I could not discover the lenity and favor of this
            sentence.                             --Swift.

   5. The object of regard; person or thing favored.

            All these his wondrous works, but chiefly man, His
            chief delight and favor.              --Milton.

   6. A gift or represent; something bestowed as an evidence of
      good will; a token of love; a knot of ribbons; something
      worn as a token of affection; as, a marriage favor is a
      bunch or knot of white ribbons or white flowers worn at a
      wedding.

            Wear thou this favor for me, and stick it in thy
            cap.                                  --Shak.

   7. Appearance; look; countenance; face. [Obs.]

            This boy is fair, of female favor.    --Shak.

   8. (Law) Partiality; bias. --Bouvier.

   9. A letter or epistle; -- so called in civility or
      compliment; as, your favor of yesterday is received.

   10. pl. Love locks. [Obs.] --Wright.

   {Challenge} {to the favor or for favor} (Law), the challenge
      of a juror on grounds not sufficient to constitute a
      principal challenge, but sufficient to give rise to a
      probable suspicion of favor or bias, such as acquaintance,
      business relation, etc. See {Principal challenge}, under
      {Challenge}.

   {In favor of}, upon the side of; favorable to; for the
      advantage of.

   {In favor with}, favored, countenanced, or encouraged by.

   {To curry favor} [see the etymology of {Favor}, above], to
      seek to gain favor by flattery, caresses, kindness, or
      officious civilities.

   {With one's favor}, or {By one's favor}, with leave; by kind
      permission.

            But, with your favor, I will treat it here.
                                                  --Dryden.

   Syn: Kindness; countenance; patronage; support; lenity;
        grace; gift; present; benefit.

Favor \Fa"vor\, v. t. [imp. & p. p. {Favored}; p. pr. & vb. n.
   {Favoring}.] [Written also favour.] [Cf. OF. favorer,
   favorir. See {Favor}, n.]
   1. To regard with kindness; to support; to aid, or to have
      the disposition to aid, or to wish success to; to be
      propitious to; to countenance; to treat with consideration
      or tenderness; to show partiality or unfair bias towards.

            O happy youth! and favored of the skies. --Pope.

            He that favoreth Joab, . . . let him go after Joab.
                                                  --2 Sam. xx.
                                                  11.

            [The painter] has favored her squint admirably.
                                                  --Swift.

   2. To afford advantages for success to; to facilitate; as, a
      weak place favored the entrance of the enemy.

   3. To resemble in features; to have the aspect or looks of;
      as, the child favors his father.

            The porter owned that the gentleman favored his
            master.                               --Spectator.

Source : WordNet®

favor
     n 1: an act of gracious kindness [syn: {favour}]
     2: an advantage to the benefit of someone or something; "the
        outcome was in his favor" [syn: {favour}]
     3: an inclination to approve; "that style is in favor this
        season" [syn: {favour}]
     4: a feeling of favorable regard [syn: {favour}]
     5: souvenir consisting of a small gift given to a guest at a
        party [syn: {party favor}, {party favour}, {favour}]
     v 1: promote over another; "he favors his second daughter" [syn:
          {prefer}, {favour}]
     2: consider as the favorite; "The local team was favored" [syn:
         {favour}]
     3: treat gently or carefully [syn: {favour}]
     4: bestow a privilege upon [syn: {privilege}, {favour}]