Source : Webster's Revised Unabridged Dictionary (1913)

Oral \O"ral\, a. [L. os, oris, the mouth, akin to Skr. [=a]s.
   Cf. {Adore}, {Orison}, {Usher}.]
   1. Uttered by the mouth, or in words; spoken, not written;
      verbal; as, oral traditions; oral testimony; oral law.

   2. Of or pertaining to the mouth; surrounding or lining the
      mouth; as, oral cilia or cirri.

Source : WordNet®

oral
     adj 1: using speech rather than writing; "an oral tradition"; "an
            oral agreement" [syn: {unwritten}]
     2: of or relating to or affecting or for use in the mouth;
        "oral hygiene"; "an oral thermometer"; "an oral vaccine"
     3: of or involving the mouth or mouth region or the surface on
        which the mouth is located; "the oral cavity"; "the oral
        mucous membrane"; "the oral surface of a starfish" [ant: {aboral}]
     4: a stage in psychosexual development when the child's
        interest is concentrated in the mouth; fixation at this
        stage is said to result in dependence, selfishness, and
        aggression [ant: {anal}]

oral
     n : an examination conducted by word of mouth [syn: {oral exam},
          {oral examination}, {viva voce}, {viva}]