Some tiger's tooth as a sword? (5)
I believe the answer is:
sabre
'sword?' is the definition.
(sabre is a kind of sword)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for sabre that I've seen before include "Type of sword" , "Slasher" , "Walt --, cartoonist" , "Large wasp" , "Heavy cavalry sword" .)