stiletto
/stɪˈletəʊ/noun
(pl. -os)
1
- chiefly Brit. a woman's shoe with a thin, high tapering heel〈主英〉细高跟女鞋。
1.1
- （亦作stiletto heel）a heel on such a shoe（女鞋的）细高跟。
2
- a short dagger with a tapering blade短剑, 匕首。
2.1
- a sharp-pointed tool for making eyelet holes（打孔眼用的）打眼锥。
词源
early 17th cent.: from Italian, diminutive of stilo 'dagger'.