绞刀

绞刀	jiǎo dāo	reamer
绞	jiǎo	to twist (strands into a thread) / to entangle / to wring / to hang (by the neck) / to turn / to wind / classifier for skeins of yarn
刀	Dāo	surname Dao
刀	dāo	knife; blade; single-edged sword; cutlass (CL:把) / (slang) (loanword) dollar / classifier for sets of one hundred sheets (of paper) / classifier for knife cuts or stabs / (Internet slang) to bargain; to ask for a small discount (esp. on second-hand marketplaces)