See the entire entry for ˀāḏār/ˀaddar n.m./f. Adar (February/March)

Ezra6:15 :וְשֵיצִיא בַּיְתָה דְנָה עַד יוֹם תְּלָתָה לִירַח אֲדָר : this temple he destroyed [but to be read as a passive: remained destroyed] until the third day of the month of Adar

See the entire entry for šyṣy vb. to destroy