From an unused root (meaning to cut off); a border of a river (as cut into by the stream) -- bank.
H1415. gadah
[גָּדָה] noun feminine bank of river (compare Arabic , id., Aramaic גּוּדָּא, wall), גְּדוֺתָיו Joshua 3:15; 4:18; 1 Chronicles 12:16 Qr (Kt גדיתיו) Isaiah 8:7.