‖n. The Zoroastrian scriptures; the sacred text of Zoroastrianism. See Zend-Avesta. [ 1913 Webster ]
a. Of or pertaining to the Avesta or the language of the Avesta. -- n. The language of the Avesta (an ancient Iranian language); -- less properly called Zend. Syn. -- Zend [ Webster 1913 Suppl. ]