Metal regularly found in open gorge (7)
I believe the answer is:
overeat
'gorge' is the definition.
(synonyms)
'metal regularly found in open' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'found in' is an insertion indicator.
'open' becomes 'overt' (synonyms).
The alternate letters of 'metal' are 'ea'.
'ea' put within 'overt' is 'OVEREAT'.
(Other definitions for overeat that I've seen before include "Indulge in gluttony" , "Consume too much like a glutton" , "Take too much food" , "Consume too much food, stuff your stomach" , "Stuff oneself silly" .)