work for or be a servant to;
"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"
- The old man has no one to wait on him.
- A pleasant country girl waits on me.
- He seemed to expect to be waited on hand and foot.
- Lucy has a summer job waiting on an invalid.
- The bus stopped and the waiting crowd piled on.
- After a long wait, we finally got on the plane.