spar
复数形式
spars
1
拳击训练, 战斗模拟
making the motions of attack and defense with the fists and arms; a part of training for a boxer
同义词：
2
桅杆, 支柱
a stout rounded pole of wood or metal used to support rigging
3
晶石, 各种非金属矿物
any of various nonmetallic minerals (calcite or feldspar) that are light in color and transparent or translucent and cleavable