(mineralogy) Any of various microcrystalline minerals, of light, translucent, or transparent appearance, which are easily cleft. / (mineralogy) Any crystal with readily discernible faces.

(obsolete or dialectal) To bolt, bar. / (transitive) To supply or equip (a vessel) with spars.

A sparring session; a preliminary fight, as in boxing or cock-fighting.

A rafter of a roof. / A thick pole or piece of wood. / (obsolete) A bar of wood used to fasten a door. / (nautical) Any linear object used as a mast, sprit, yard, boom, pole or gaff.

To fight, especially as practice for martial arts or hand-to-hand combat. / To strike with the feet or spurs, as cocks do. / To contest in words; to wrangle.

(rail transport, UK) Initialism of signal passed at red.

simple past tense and past participle of spar

present participle of spar

The act of one who spars.

Third-person singular simple present indicative form of spar