What is the meaning of fledgling?

noun

• Any new participant in some activity.
  • synonyms: newcomer, fledgeling, starter, neophyte, freshman, newbie, entrant
• Young bird that has just fledged or become capable of flying.
  • synonyms: fledgeling

adjective

• Of a young bird. ( having acquired its flight feathers)
  • usage: "a fledgling robin"
  • synonyms: fledgeling
• Young and inexperienced.
  • usage: "a fledgling enterprise"; "a fledgling skier"; "an unfledged lawyer"
  • synonyms: unfledged, callow