Definition of age verb from the Oxford Advanced American Dictionary
age
verb
/eɪdʒ/
aging, aged, aged1[intransitive]to become olderAs he aged, his memory got worse.The population is aging (= more people are living longer).2[transitive]to make someone or something look, feel, or seem olderage someoneThe shock has aged her.age somethingExposure to the sun ages your skin.These photos have been artificially aged.3[intransitive, transitive]to develop in flavor over a period of time; to allow something to do thissynonymmatureThe cheese is left to age for at least a year.age somethingThe wine is aged in oak casks.