刀

dāo ㄉㄠ

1. knife blade single-edged sword cutlass (CL:把[ba3])
2. (loanword) dollar

   slang

3. classifier for sets of one hundred sheets (of paper)
4. classifier for knife cuts or stabs
5. to bargain to ask for a small discount (esp. on second-hand marketplaces)

   Internet slang

6. to knife (sb) (often used hyperbolically, as in 想刀他[xiang3 dao1 ta1] "I could kill him!")

   Internet slang