Run off with thin, short woman (6)
I believe the answer is:
thieve
'run off with' is the definition.
(to run off with something is to steal it)
'thin short woman' is the wordplay.
'short' means to remove the last letter.
'woman' becomes 'eve' (Eve is an example).
'thin' with its final letter taken off is 'thi'.
'thi'+'eve'='THIEVE'
(Other definitions for thieve that I've seen before include "Nick things" , "Rob" , "Steal things" , "Pilfer" , "Take illegally" .)