oral
adjective(o-ral)
using speech rather than writing
Examples:
An oral tradition. 
An oral agreement. 
oral
adjective(o-ral)
of or involving the mouth or mouth region or the surface on which the mouth is located
Examples:
The oral cavity. 
The oral mucous membrane. 
The oral surface of a starfish. 
oral
noun(o-ral)
an examination conducted by spoken communication
Synonyms: oral exam, oral examination, 
viva, viva voce, 
 oral
adjective(o-ral)
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
(o-ral)
of or relating to or affecting or for use in the mouth
Examples:
Oral hygiene. 
An oral thermometer. 
An oral vaccine.