What is the meaning of fleshed out?

verb

• Make fat or plump.
  • usage: "We will plump out that poor starving child"
  • synonyms: fatten, fat, flesh out, fill out, plump, plump out, fatten out, fatten up
• Add details, as to an account or idea; clarify the meaning of and discourse in a learned way, usually in writing.
  • usage: "She elaborated on the main ideas in her dissertation"
  • synonyms: elaborate, lucubrate, expatiate, exposit, enlarge, flesh out, expand, expound, dilate
• Become round, plump, or shapely.
  • usage: "The young woman is fleshing out"
  • synonyms: round, flesh out, fill out

adjective

• Given substance or detail; completed.
  • usage: "did not spring full-clad from his imagination"; "a plan fleshed out with statistics and details"
  • synonyms: full-clad