Indo-European

Short definition from Wiktionary

Proper noun

1. 1
   A major language family which includes many of the native languages of Europe, Western Asia and India, with notable Indic, Iranian and European sub-branches.
2. 2
   Proto-Indo-European: the hypothetical parent language of the Indo-European language family.

Noun

1. 1
   A member of the original ethnolinguistic group hypothesized to have spoken Proto-Indo-European and thus to have been the ancestor for most of India and Western Eurasia.
2. 2
   A speaker of any Indo-European language (though especially an ancient one), or a member of an Indo-European culture, who is regarded as a continuation of the Proto-Indo-Europeans in terms of language, ancestry, or cultural affinity.
3. 3
   A European living in India or the Indies.
4. 4
   A person of mixed European and Indian or Indonesian ancestry.

Adjective

1. 1
   Of or relating to the family of languages originally spoken in Europe and Western Asia.
2. 2
   Of or relating to the hypothetical parent language of the Indo-European language family.
3. 3
   Of or relating to the hypothetical group of peoples that spread early Indo-European languages.
4. 4
   Of or relating to persons of mixed European and Indian or Indonesian ancestry.