oral (Adjective) — Using speech rather than writing. ex. "an oral agreement"
oral (Adjective) — Of or relating to or affecting or for use in the mouth. ex. "oral hygiene" ex. "an oral thermometer" ex. "an oral vaccine"
oral (Adjective) — (anatomy) of or involving the mouth or mouth region or the surface on which the mouth is located. ex. "the oral cavity" ex. "the oral mucous membrane" ex. "the oral surface of a starfish"
oral (Adjective) — (psychoanalysis) 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.
oral (Noun) — An examination conducted by spoken communication.