In the Indian mythology, the sons of Indra - Jayant, Arjun, and Vali - are called Aindri.

Aindri is thus a patronymic here.

In some places in the Indian mythology, the wife of Indra, Shachi is also referred with this epithet.

In the Rig Ved, there is a hymn to Indra, and therefore, this hymn is also called Aindri.

In some other places in the Indian mythology, it is mentioned as a name of the goddess Durga.