old /əuld/ adj. 1. 老的，年老的：an old friend 老朋友； an old horse 一匹老马；He is too old to work.他年纪太大，不能干活了。 2. 旧的：This radio is an old model.这台收音机是旧型号。 3.…岁的：How old are you?你多大岁数?The boy is eight years old.这个男孩8岁了。