Ordinary metal in rake (7)
I believe the answer is:
routine
'ordinary' is the definition.
('routine' can be similar in meaning to 'ordinary')
'metal in rake' is the wordplay.
'metal' becomes 'tin' (tin is a kind of metal**).
'in' indicates putting letters inside.
'rake' becomes 'roue' ('roue' can be a synonym of 'rake').
'tin' put within 'roue' is 'ROUTINE'.
(Other definitions for routine that I've seen before include "Lacking variety" , "habit" , "Regularly performed" , "Regular, humdrum" , "As a rule" .)