Age  —n. 1 length of time that a person or thing has existed. 2 a colloq. (often in pl.) A long time (waited for ages). B distinct historical period (bronze age). 3 old age. —v. (ageing) 1 show or cause to show signs of advancing age. 2 grow old. 3 mature.  come of age reach adult status (esp. Law at 18, formerly 21). [latin aetas]