serve
US /sɝːv/
UK /sɝːv/

1.
perform duties or services for (a person or organization)
:
•
He has served the company for 20 years.
•
The waiter served us quickly.
2.
3.
1.
a period of time spent in a particular job or activity
:
•
He completed his military service.
•
She has a long service record.
2.
the action of helping or doing work for someone
:
•
Customer service is very important.
•
The hotel offers excellent room service.