Turned to small injuries (6)
I believe the answer is:
wounds
'injuries' is the definition.
(I know this)
'turned to small' is the wordplay.
'turned' becomes 'wound'.
'to small' becomes 's' (abbreviation - e.g. clothes size).
'wound'+'s'='WOUNDS'
(Other definitions for wounds that I've seen before include "Injures" , "Hurts, emotionally or physically" , "Inflicts injury on, physical or mental" , "Injuries to bodies or feelings" , "Injuries to living tissue" .)