Durgshah
Durgshah is word comes in Dasam Granth, Second Scripture of Sikhs which means the King of Fort. It is a Masculine word. Durgshah term is not equivalent to Durga.
Etymology
DurgShah is mixture of two words Durg + Shah, Durg means Fort and Shah means King i.e King of Fort is called Durgshah.
Interpretations
In Gurmukh Interpretation, Gurmat is Godess(ਮਤੀ ਦੇਵੀ ਦੇਵਰ ਜੇਸਟ). The Mind which turned into intuitive and discerning mind is called Chandi.
ਦਾਸ ਕਮੀਰ ਚੜਹਹਿਓ ਗੜਹਹ ਊਪਰਿ ਰਾਜ ਲੀਓ ਅਬਿਨਾਸੀ ॥੬॥੯॥੧੭॥
When a person break all his manmatt and his mind convert into Intuitive and discerning mind, (ਚੜਹਹਿਓ ਗੜਹਹ ਊਪਰਿ = Durg), and he become king of world (ਰਾਜ ਲੀਓ ਅਬਿਨਾਸੀ = Shah ), Gurmukhs interpret that whoseoever have this sitiation is called DURGSHAH. Durgshah is for person and Durga is his Matt. Chandi, Durga, Shiva are name of Matt of Durgshah.
In Hindu's Interpretation, it is some goddess, having some form, live in himalya and is wife of Mahadev Shivji, which is totally opposite to defination of Chandi by Guru Gobind Singh.