THUMB-SCREW
\θˈʌmskɹˈuː], \θˈʌmskɹˈuː], \θ_ˈʌ_m_s_k_ɹ_ˈuː]\
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n. A screw having the head flattened in the direction of its length, so that it may be turned by the thumb and fore-finger;-an instrument of torture for compressing the thumb or hand by a screw, formerly used in Scotland; a thumbkin ; thumbikins.
