Blade caused injury to female (7)

I believe the answer is:

cutlass

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'blade' is the definition.
(I know that Cutlass is a type of blade)

'injury to female' is the wordplay.
'injury' becomes 'cut' (cut is a kind of injury).
'to female' becomes 'lass' (lass is a kind of female).
'cut'+'lass'='CUTLASS'

'caused' acts as a link.
This may not be right. It may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for cutlass that I've seen before include "Short broad sword" , "Short, broad-bladed sword" , "could hurt one, in the main" , "Type of sword" , "Sailor's blade" .)

I've seen this clue in The Telegraph.

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