The term TEAM LEADER (ABBR.) can be abbreviated in two ways: CAPT (4 letters) and MGR (3 letters). CAPT stands for Captain, which is a rank or title given to a leader of a team or group. A Captain is usually in charge of leading a team, making sure that the team is working together and that tasks are completed. MGR stands for Manager, which is a job title given to someone who is responsible for managing a team or group. A Manager is typically in charge of overseeing the operations of a team, ensuring that tasks are completed on time and that the team is working efficiently.