刀背

刀背	dāo bèi	back of the knife
刀	Dāo	surname Dao
刀	dāo	knife / blade / single-edged sword / cutlass / CL:把 / (slang) dollar (loanword) / classifier for sets of one hundred sheets (of paper) / classifier for knife cuts or stabs
背	bēi	variant of 背
背	bēi	to be burdened / to carry on the back or shoulder
背	bèi	the back of a body or object / to turn one's back / to hide something from / to learn by heart / to recite from memory / (slang) unlucky / hard of hearing