Case not out of position (8)
I believe the answer is:
instance
'case' is the definition.
('instance' can be a synonym of 'case')
'not out of position' is the wordplay.
'not out of' becomes 'in'.
'position' becomes 'stance' (stance is a kind of position**).
'in'+'stance'='INSTANCE'
(Other definitions for instance that I've seen before include "Case or example from ancients" , "Occasion" , "Exemplify" , "Case in point" , "Cite as an example" .)