Ambidextrous refers to the ability to use both hands equally well. In this context, it means that Carlos is capable of throwing accurately with both his left and right hands. The word can be broken down into two parts: "ambi" means both or both sides, and "dextrous" refers to skill or ability with the hand. The context clue here is Carlos being able to throw accurately with his left hand even after spraining his right wrist, indicating his ambidexterity.
