spare

adj 1: thin and fit; "the spare figure of a marathon runner"; "a body kept trim by exercise" syn 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, supererogatory, superfluous, supernumerary, surplus

3: just sufficient; "the library had a spare but efficient look"

4: not taken up by scheduled activities; "a free hour between classes"; "spare time on my hands" syn free

5: kept in reserve especially for emergency use; "a reserve supply of food"; "a spare tire"; "spare parts" syn reserve(a)

6: lacking in amplitude or quantity; "a bare livelihood"; "a scanty harvest"; "a spare diet" syn bare(a), scanty

n 1: an extra component of a machine or other apparatus syn spare part

2: an extra car wheel and tire for a four-wheel vehicle syn fifth wheel

3: a score in tenpins; knocking down all ten after rolling two balls

v 1: refrain from harming syn 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 give up, part with, dispense with

4: use frugally or carefully

Source: WordNet. Princeton University