rapier

rapier
/ˈreɪpɪə(r); `repɪɚ/ n
light thin double-edged sword, used for thrusting 一种轻巧细长的剑（用以刺戳）
    [attrib 作定语]
(fig 比喻) rapier wit 机智的言语. =>illus at sword 见sword插图.

牛津英汉双解词典