Passing me her pale shifts (9)
I believe the answer is:
ephemeral
'passing' is the definition.
('ephemeral' can be a synonym of 'passing')
'me her pale shifts' is the wordplay.
'shifts' is an anagram indicator.
'me'+'her'+'pale'='meherpale'
'meherpale' anagrammed gives 'EPHEMERAL'.
(Other definitions for ephemeral that I've seen before include "just for a day?" , "short term gain" , "Having only brief existence" , "not going to last long" , "staying for a little while" .)