From WordNet (r) 3.0 (2006) [wn]:
available
adj 1: obtainable or accessible and ready for use or service;
"kept a fire extinguisher available"; "much information
is available through computers"; "available in many
colors"; "the list of available candidates is unusually
long" [ant: unavailable]
2: not busy; not otherwise committed; "he was not available for
comment"; "he was available and willing to accompany her"
[syn: available, uncommitted]
3: convenient for use or disposal; "the house is available after
July 1"; "2000 square feet of usable office space" [syn:
available, usable, useable]
From The Collaborative International Dictionary of English v.0.48 [gcide]:
Available \A*vail"a*ble\, a.
1. Having sufficient power, force, or efficacy, for the
object; effectual; valid; as, an available plea. [Obs.]
[1913 Webster]
Laws human are available by consent. --Hooker.
[1913 Webster]
2. Such as one may avail one's self of; capable of being used
for the accomplishment of a purpose; usable; profitable;
advantageous; convertible into a resource; as, an
available measure; an available candidate.
[1913 Webster]
Struggling to redeem, as he did, the available
months and days out of so many that were
unavailable. --Carlyle.
[1913 Webster]
Having no available funds with which to pay the
calls on new shares. --H. Spenser.
[1913 Webster]