definition of
usable

[1] #1 usable s. [useable] capable of being put to use; "usable byproducts". wn

[2] #2 usable s. [functional, useable, operable, operational] fit or ready for use or service; "the toaster was still functional even after being dropped"; "the lawnmower is a bit rusty but still usable"; "an operational aircraft"; "the dishwasher is now in working order". wn

[3] #3 usable s. [available, useable] convenient for use or disposal; "the house is available after July 1"; "2000 square feet of usable office space". wn