The verb "catch" has several meanings, including:
1. To seize or grasp something with one's hands, especially quickly and firmly. For example: "I caught the ball before it hit the ground."
2. To understand or perceive something, especially suddenly or unexpectedly. For example: "I catch your drift" (meaning I understand what you are saying).
3. To prevent or stop something from happening by taking action in time. For example: "We caught the thief red-handed."
4. To obtain or acquire something, especially after some effort or search. For example: "I finally caught a taxi after waiting for long".