Takes a cubic centimetre step out (7)
I believe the answer is:
accepts
'takes' is the definition.
('accept' can be a synonym of 'take')
'a cubic centimetre step out' is the wordplay.
'cubic centimetre' becomes 'cc' (synonyms).
'out' is an anagram indicator (out can mean wrong or inaccurate).
'step' anagrammed gives 'epts'.
'a'+'cc'+'epts'='ACCEPTS'
(Other definitions for accepts that I've seen before include "Takes on board" , "Takes; approves" , "Admits" , "Says yes" , "Takes (an offer)" .)