From WordNet (r) 3.0 (2006):
spare
adj 1: thin and fit; "the spare figure of a marathon runner"; "a
body kept trim by exercise" [syn: spare, trim]
2: more than is needed, desired, or required; "trying to lose
excess weight"; "found some extra change lying on the
dresser"; "yet another book on heraldry might be thought
redundant"; "skills made redundant by technological advance";
"sleeping in the spare room"; "supernumerary ornamentation";
"it was supererogatory of her to gloat"; "delete superfluous
(or unnecessary) words"; "extra ribs as well as other
supernumerary internal parts"; "surplus cheese distributed to
the needy" [syn: excess, extra, redundant, spare,
supererogatory, superfluous, supernumerary, surplus]
3: not taken up by scheduled activities; "a free hour between
classes"; "spare time on my hands" [syn: spare, free]
4: kept in reserve especially for emergency use; "a reserve
supply of food"; "a spare tire"; "spare parts"
5: lacking in amplitude or quantity; "a bare livelihood"; "a
scanty harvest"; "a spare diet" [syn: bare(a), scanty,
spare]
6: lacking embellishment or ornamentation; "a plain hair style";
"unembellished white walls"; "functional architecture
featuring stark unornamented concrete" [syn: plain, bare,
spare, unembellished, unornamented]
n 1: an extra component of a machine or other apparatus [syn:
spare part, spare]
2: an extra car wheel and tire for a four-wheel vehicle [syn:
fifth wheel, spare]
3: a score in tenpins; knocking down all ten after rolling two
balls
v 1: refrain from harming [syn: spare, save]
2: save or relieve from an experience or action; "I'll spare you
from having to apologize formally"
3: give up what is not strictly needed; "he asked if they could
spare one of their horses to speed his journey" [syn:
spare, give up, part with, dispense with]
4: use frugally or carefully