Small split in your trousers (4)
I believe the answer is:
tiny
'small' is the definition.
(similar in meaning)
'split in your trousers' is the wordplay.
'trousers' says the answer is hidden in the clue (trouser can mean to steal or take).
'TINY' can be found hidden inside 'split in your'.
(Other definitions for tiny that I've seen before include "Microscopic" , "Minute, diminutive" , "with sharp points?" , "Underdeveloped" , "Extremely small" .)