1. (of a young bird) develop wing feathers that are large enough for flight: "the young fledge around four weeks after hatching"
▪ bring up (a young bird) until its wing feathers are developed enough for flight:"they fledged twenty-four chicks in fourteen months"
Word Originmid 16th century: from the obsolete adjective fledge ‘ready to fly’, from Old English, of Germanic origin; related to Dutch vlug ‘quick, agile’, also to fly1.