1.Definition: (of birds) having developed feathers or plumage; often used in combination

Related Adjective(s):fledged

2.Definition: characteristic of maturity

"Mature for her age"

3.Definition: fully considered and perfected

"Mature plans"

Related Adjective(s):matured

4.Definition: fully developed or matured and ready to be eaten or used

"Full-bodied mature wines"

Related Adjective(s):ripe

5.Definition: having reached full natural growth or development

"A mature cell"