Definition of "Spar" :
noun: making the motions of attack and defense with the fists and arms; a part of training for a boxer
noun: a stout rounded pole of wood or metal used to support rigging
noun: any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable
verb: fight verbally
"They were sparring all night."
verb: box lightly
verb: fight with spurs
"The gamecocks were sparring."
verb: furnish with spars