Grab strange crow (4)
I believe the answer is:
brag
'crow' is the definition.
('brag' can be a synonym of 'crow')
'grab strange' is the wordplay.
'strange' indicates anagramming the letters.
'grab' with letters rearranged gives 'BRAG'.
(Other definitions for brag that I've seen before include "popular with 15 [EGOTIST] , no doubt" , "Idle talk" , "Show off, crow" , "Talk boastfully" , "game, making > boast" .)