Danusha is the bow, an important utensil of Gods and heroes. There are many myths about bows and who created them – Brahma, Vishvakarma, Indra.
Sage Kanva sat in meditation for thousands of years. The bamboo in his garden grew so tall that it reached into Indra’s realm. When he recognized the high quality of this bamboo he made three bows out of it. He kept the Gandiva for himself, the Sharanga he gave to Vishnu, the Pinaka to Shiva. The Gandiva he later gave to his son, Arjuna.
Another mighty bow was Karnas Vijaya.