TgO Gen16:7 :וְאַשכְחַה מַלאֲכָא דַיוי עַל עֵינָא דְמַיָא בְמַדבְרָא‏ : the Lord's angel found her at the water source in the desert
See the entire entry for ˁayn/ˁēn, ˁaynā n.f. eye; spring