1. 等待（某事发生）
If you are waiting on something, you are waiting for it to happen, for example before you do or decide anything.

1. work for or be a servant to

e.g. May I serve you?
She attends the old lady in the wheelchair
Can you wait on our table, please?
Is a salesperson assisting you?
The minister served the King for many years

Synonym: serveattend toattendassist