Last time in, for example (4)
I believe the answer is:
stay
'last' is the definition.
(I've seen this before)
'time in for example' is the wordplay.
'time' becomes 't' (abbreviation).
'in' means one lot of letters goes inside another.
'for example' becomes 'say' ('say' can be used to introduce an example).
't' placed inside 'say' is 'STAY'.
(Other definitions for stay that I've seen before include "Rope bracing a mast etc" , "Postpone" , "Temporary residence" , "Put off - visit" , "hang about" .)