Dad has European plume (7)
I believe the answer is:
feather
'plume' is the definition.
('feather' can be a synonym of 'plume')
'dad has european' is the wordplay.
'dad' becomes 'father' (I've seen this before).
'has' is an insertion indicator.
'european' becomes 'e' (abbreviation e.g. EU).
'father' enclosing 'e' is 'FEATHER'.
(Other definitions for feather that I've seen before include "Quill" , "In your cap, it's an accomplishment" , "A white one denotes cowardice" , "dance step" , "The fear (anag) - type of bed" .)