adj 1: able to be put to use; "usable byproducts" [syn: useable
2: 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" [syn: functional
, in working order(p)
3: convenient for use or disposal; "the house is available
after July 1"; "2000 square feet of usable office space"