gimlet

gimlet
/ˈgɪmlɪt; `ɡɪmlɪt/ n
small T-shaped tool for boring a screw hole in a piece of wood 螺丝锥; 木钻; 手钻
    (fig 比喻) eyes like gimlets, ie sharp eyes which seem to penetrate with their look 锐利如锥的目光.

牛津英汉双解词典