To catch an animal or person in a trap or a situation from which it is difficult to escape. The hunter managed to trap the fox using a snare.
To place someone in a difficult or unpleasant situation from which it is hard to escape. The heavy snowstorm trapped the hikers on the mountain overnight.
To trick someone into doing something that they did not intend to do. The journalist tried to trap the politician into making a controversial statement.
To prevent something from escaping or being lost. The insulation is designed to trap heat inside the building.
In sports, especially soccer, to stop and control (a moving ball) with a part of the body. She expertly trapped the pass with her right foot.