avesta : Idioms & Phrases

• noun a collection of Zoroastrian texts gathered during the 4th or 6th centuries
  Avesta.
  

WordNet

Zend`-A*ves"ta noun

Etymology

Properly, the Avesta, or sacred text, and its zend, or interpretation, in a more modern and intelligible language. W. D. Whitney.

Definitions

1. The sacred writings of the ancient Persian religion, attributed to Zoroaster, but chiefly of a later date.

Webster 1913