The Collaborative International Dictionary of English v.0.48:

Flavor \Fla"vor\, n. [OF. fleur, flaur (two syllables), odor,
   cf. F. fleurer to emit an odor, It. flatore a bad odor, prob.
   fr. L. flare to bow, whence the sense of exhalation. Cf.
   Blow.] [Written also flavour.]
   1. That quality of anything which affects the smell; odor;
      fragrances; as, the flavor of a rose.
      [1913 Webster]

   2. That quality of anything which affects the taste; that
      quality which gratifies the palate; relish; zest; savor;
      as, the flavor of food or drink.
      [1913 Webster]

   3. That which imparts to anything a peculiar odor or taste,
      gratifying to the sense of smell, or the nicer perceptions
      of the palate; a substance which flavors.
      [1913 Webster]

   4. That quality which gives character to any of the
      productions of literature or the fine arts.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

flavour \flavour\ v. t.
   same as flavor, v. and n.. [Chiefly Brit.]

   Syn: season, flavor, give flavor.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

flavour
    n 1: the general atmosphere of a place or situation and the
         effect that it has on people; "the feel of the city excited
         him"; "a clergyman improved the tone of the meeting"; "it
         had the smell of treason" [syn: spirit, tone, feel,
         feeling, flavor, flavour, look, smell]
    2: (physics) the six kinds of quarks [syn: flavor, flavour]
    3: the taste experience when a savoury condiment is taken into
       the mouth [syn: relish, flavor, flavour, sapidity,
       savor, savour, smack, nip, tang]
    v 1: lend flavor to; "Season the chicken breast after roasting
         it" [syn: season, flavor, flavour]