Eccentric type (6)
I believe the answer is:
weirdo
'eccentric type' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for weirdo that I've seen before include "Strange person (colloq.)" , "Unpleasantly strange or eccentric person" , "Nutcase" , "Crank - oddball" , "Person who behaves bizarrely" .)