I for example get nothing (3)
I believe the answer is:
ego
'i' is the definition.
('I' in Latin)
'example get nothing' is the wordplay.
'example' becomes 'eg' (short for 'exempli gratia', 'for example' in Latin).
'get' means one lot of letters go next to another.
'nothing' becomes 'O' (O resembles 0).
'eg'+'o'='EGO'
'for' is the link.
(Other definitions for ego that I've seen before include "In Virgil I" , "See 21 Down" , "Vowel to disappear, < say another" , "Conscious mind" , "Conscious self" .)