Avestan has 5 different meanings across 3 categories:
Noun · Adjective · Proper Noun
an ancient Iranian language
the script in which the ancient Persian language of the Avesta is written
of or pertaining to the Avesta (sacred text of Zoroastrianism)
Of or pertaining to Avesta or Avestan.
An ancient Eastern Old Iranian language that was used to compose the sacred hymns and canon of the Zoroastrian Avesta.