1. a soft hat that fits closely on the head, often with a visor
2. a cover or top for something
3. an upper limit on something

1. to put a cap or cover on something
2. to set an upper limit on something
3. to surpass or exceed

Examples

• He wore a baseball cap to shield his eyes from the sun.
• Please put the cap back on the toothpaste tube.
• The government imposed a cap on rent increases.
• She capped the pen after writing the letter.
• The company decided to cap employee bonuses at $5,000.
• His final performance capped an amazing career.
• The bottle cap was difficult to remove.
• Snow capped the mountain peaks in winter.