In post-Vedic India, the noun mitra came to be understood as "friend", one of the aspects of bonding and alliance.
ɪn pˈoʊstvˈɛdɪk ˈɪndiə, ðə nˈaʊn mˈɪtɹə kˈeɪm təbi ˌʌndɚstˈʊd æz "fɹˈɛnd", wˈʌn ʌvðɪ ˈæspɛkts ʌv bˈɑːndɪŋ ænd ɐlˈaɪəns.