A tiller turned out precise (7)
I believe the answer is:
literal
'precise' is the definition.
(I've seen this in another clue)
'a tiller turned' is the wordplay.
'turned' indicates anagramming the letters.
'a'+'tiller'='atiller'
'atiller' anagrammed gives 'LITERAL'.
'out' is the link.
(Other definitions for literal that I've seen before include "typographical error" , "Textual error" , "Lacking imagination; misprint" , "Actual" , "Not figurative" .)