Obtainable, accessible (9)
I believe the answer is:
available
I believe this is a double definition.
'obtainable' is the first definition.
(similar in meaning)
'accessible' is the second definition.
(similar in meaning)
(Other definitions for available that I've seen before include "Accessible and ready for use" , "handy" , "Can be had or obtained, in stock" , "Ready or able to be used" , "Able to be obtained" .)