Ambidextrous means having the ability to use both hands equally well. The word can be broken down into two parts: "ambi-" meaning both or both sides, and "-dextrous" meaning relating to the hands. The context clues in the sentence indicate that Carlos can throw accurately with his left hand even though he sprained his dominant hand, the right hand. Therefore, it is clear that ambidextrous refers to someone who is equally skilled with both hands.
