What is "mahagauri"

Mahagauri (Devnagari: महागौरी) is the eighth manifestation of goddess Durga and amongst the Navadurgas. Mahagauri is worshipped on the eighth day of Navratri. According to Hindu mythology, Goddess Mahagauri has the power to fulfill all the desires of her devotees. The one who worships the goddess gets relief from all the sufferings in life. Mahagauri has four arms. Her right arm is in the pose of allaying fear and right lower hand holds a trident in it. She holds a tambourine in her left upper arm and the lower one is in the form of a blessing.