形容词

1. 年长的;上年纪的
You use elderly as a polite way of saying that someone is old.

2. 老式的;老掉牙的
If you describe an object as elderly, you are referring, often in a humorous way, to the fact that it is rather old or old-fashioned and not as good or efficient as a new one would be.

1. people who are old collectively

e.g. special arrangements were available for the aged

Synonym: aged