1) Capable of being retracted 2) Retractile 1) Retractile 
• (a.) Capable of being retracted; retractile.
[Adjective] Something that can be taken in or withdrawn.
Capable of being hidden, as in parts of an animal`s body.
Capable of being hidden, as in parts of an animal`s body.
Cats (except cheetahs) and fossas have the ability to pull in, or retract, their claws when not in use.
Re·tract'a·ble (-ȧ*b'l) adjective [ Confer French rétractable .] Capable of being retracted; retractile. 
[adj] - capable of being retracted
adjective capable of being retracted; `retractable landing gear`
A car having a mechanically retractable hardtop such as the late '50's Ford Skyliner.
retráctil