spur: [OE] Spur goes back ultimately to Indo- European *sper- ‘hit with the foot, kick’ (source also of English spurn [OE], which originally meant literally ‘hit with the foot, trip over’). From it was descended the prehistoric Germanic noun *spuron, which produced German sporn ‘spur’, Dutch spoor ‘track’ (source of English spoor [19]), and Swedish sporre ‘spur’ as well as English spur. => spoor, spurn[spur etymology, spur origin, 英语词源]