Hindustani

Short definition from Wiktionary

Adjective

1. 1
   Related to India, varying historically from the entire Indian subcontinent to India north of the Deccan, especially the plains of the Ganges and Jumna.
2. 2
   of or pertaining to Hindustani music.

Noun

1. 1
   A person from India, varying historically from the entire subcontinent to India north of the Deccan, especially the plains of the Ganges and Jumna.

Proper noun

1. 1
   The pluricentric language of Hindi-Urdu, of which Hindi and Urdu are literary standards; the language from which Hindi and Urdu are derived.
2. 2
   The Delhi dialect of that language.
3. 3
   The language which is now known as Urdu.
4. 4
   The language which is now known as Hindi.