adj. & n.
adj. 1 by word of mouth; spoken; not written (the oral tradition). 2 done or taken by the mouth (oral contraceptive). 3 of the mouth. 4 Psychol. of or concerning a supposed stage of infant emotional and sexual development, in which the mouth is of central interest.
n. colloq. a spoken examination, test, etc. oral sex sexual activity in which the genitals of one partner are stimulated by the mouth of the other. oral society a society that has not reached the stage of literacy. orally adv.
[ LL oralis f. L os oris mouth ]