Goddess Vishweshwari is a name used to refer to Mother Goddess Shakti. The term is used when Goddess Shakti is referred as the queen of all living and nonliving and the ruler of all being. As Goddess Vishweshwari is the protector –Mother to all.
It is Devi Mahatmya that uses the term Goddess Vishweshwari to emphasize the role of mother taken by Goddess Shakti. She who is unimaginably ferocious towards those who practice Adharma is at the same time kind and benevolent towards her children who follow Dharma.
Today Vishweshwari is used as an adjective to glorify various manifestations of Goddess Shakti and also Goddess Lakshmi.