ATS 1.1:182 :halin ḏkadbin ˁngirta lmalka rba : those who write a letter to the great king
See the entire entry for ˀeggrā, ˀeggarṯā n.f. letter

ATS 1.1:182 :halin ḏkadbin ˁngirta lmalka rba :
See the entire entry for ktb vb. to write