What does "full-fledged" mean?

Native speaker’s answer
Rebecca
To be "full-fledged" means to be fully and completely developed or established, or to be full status. It originates from birds, which are considered to be fledged when they have grown all their feathers and are ready to fly. Ex: After Joan finished her internship, she became a full-fledged employee of the company. Ex: Even though he was young, John was a full-fledged politician.