Nouns

(n)sparany of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable
(n)spara stout rounded pole of wood or metal used to support rigging
(n)spar, sparringmaking the motions of attack and defense with the fists and arms; a part of training for a boxer

Verbs

(v)sparfurnish with spars
(v)sparfight with spurs“the gamecocks were sparring”
(v)sparbox lightly
(v)sparfight verbally“They were sparring all night”