A tight end is a position in American football that combines the roles of a receiver and a lineman. They line up next to the offensive line and can block for the running back or quarterback, as well as run routes to catch passes. This versatility makes them valuable in both the running and passing game. Tight ends are often larger and stronger than wide receivers, allowing them to effectively block defenders. Notable tight ends, such as Rob Gronkowski and Tony Gonzalez, have made significant impacts in the NFL with their ability to catch passes and contribute to their teams' offensive strategies.