/spɜ:(r) ||; spɝ/noun[C] 1 a piece of metal that a rider wears on the back of his/her boots to encourage the horse to go faster 马刺（镶在马靴后跟的金属片，用于踢马使它快跑） ☞picture at horse 见horse插图
2 a spur (to sth) something that encourages you to do sth or that makes sth happen more quickly 激励；鞭策；鼓舞
3 (in geography 地理学) a part of a hill that sticks out from the rest, often with lower ground around it 山嘴，坡尖，山鼻子（指山的突出部份）
on the spur of the moment without planning; suddenly 一时冲动；心血来潮