Eccentric and I rowed out (6)
I believe the answer is:
weirdo
'eccentric' is the definition.
(thesaurus)
'i rowed out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'i'+'rowed'='irowed'
'irowed' with letters rearranged gives 'WEIRDO'.
'and' is the link.
(Other definitions for weirdo that I've seen before include "Informally, an eccentric or very strange person" , "Freak" , "An eccentric (sl.)" , "Informally eccentric person - sounds spooky" , "Unpleasantly strange or eccentric person" .)