thumbscrew

美 [ˈθʌmˌskru]
英 [ˈθʌmˌskruː]
  • n.拇指夹(旧时的一种刑具)
  • 网络翼形螺钉;指旋螺丝;蝶形螺钉
复数:thumbscrews  
thumbscrew
n.
1.
拇指夹(旧时的一种刑具)an instrument that was used in the past for torturing people by crushing their thumbs