old/əʊld/
adj.1. 年纪大的； 年岁的‘How old are you?’ ‘16 years old.’“你多大了？”“（我）16 岁。”
How old will you be on December 31 of this year?到今年十二月三十一日时你将几岁？
2. 老的；旧的；上年纪的，年老的；用旧的old people老年人
old shoes旧鞋子
3. 以前的An old student came back to visit his teacher.昔日的学生回来探望老师。
4. 早已了解的；熟悉的old friends老朋友
the same old story老掉牙的故事
I'm an old hand at this game; you can't trick me. (喻)这玩意儿我是老手，你骗不了我。
5. （用于加强语气）any old time随便什么时候
any old thing随便什么东西