Recognise eccentric, tiny, I fed (8)
I believe the answer is:
identify
'recognise' is the definition.
(to recognise someone or something)
'eccentric tiny i fed' is the wordplay.
'eccentric' is an anagram indicator.
'tiny'+'i'+'fed'='tinyifed'
'tinyifed' anagrammed gives 'IDENTIFY'.
(Other definitions for identify that I've seen before include "Pinpoint" , "Detect" , "Point out" , "Sympathise" , "Establish who a person is" .)