fledge /flɛd͡ʒ/verb 4adjective 1forms 3 verb4 •To grow, cover or be covered with feathers. •To complete the last moult and become a winged adult insect. •To care for a young bird until it is capable of flight. •To decorate with feathers. adjective1 •(no longer used) Feathered; furnished with feathers or wings; able to fly.his shoulders, fledge with wings — 1667 formsfledged · fledging · fledges