1. past tense and past participle of serve; provided food or drink to someone
2. past tense and past participle of serve; worked for or helped someone or an organization
3. past tense and past participle of serve; fulfilled a particular purpose or function

Examples

• The waiter served dinner at seven o’clock.
• She served her country for twenty years in the military.
• The old bridge served the community well for decades.
• He was served with a court summons yesterday.
• The tennis player served an ace to win the match.
• Coffee was served after the meeting ended.
• The mayor served three terms in office.