Sounds like minor dexterity (7)
I believe the answer is:
sleight
'dexterity' is the definition.
(I know that dexterity can be written as sleight)
'sounds like minor' is the wordplay.
'sounds like' indicates a 'sounds like' (homophone) clue.
'minor' becomes 'slight' (I've seen this before).
'slight' sounds like 'SLEIGHT'.
(Other definitions for sleight that I've seen before include "Artful trick" , "Dexterity (usually of hand)" , "craft" , "distraction?" , "Trickery" .)