(spär) noun
1. Naut. A round timber for extending a sail, as a mast, yard, or boom.
2. A similar heavy, round timber forming part of a derrick, crane, etc., or used for various other purposes.
3. Aeron. That part of an airplane wing which carries the ribs.
4. Naut. A spar buoy: see under BUOY.
—v.t. sparred, spar·ring
1. To furnish with spars.
2. Archaic To fasten, as with a bolt. [<ON sparri a beam]

(spär) v.i. sparred, spar·ring
1. To box, especially with care and adroitness.
2. To bandy words; wrangle.
3. To fight, as cocks, by striking with spurs.
—noun The act or practice of boxing, as by pugilists; a boxing match: also spar′ring. [<OF esparer <Ital. sparare kick <L parare prepare]

(spär) noun
A vitreous, crystalline, easily cleavable, lustrous mineral. [<MDu. Akin to OΕ spær gypsum.]

(spär) noun
A member of the women's reserve of the United States Coast Guard. Also SPAR. [<L s(emper) par(atus) always ready, the motto of the U. S. Coast Guard]