תהילים לג:ז פירוש: רש״י

as a mound Heb. כנד, an expression of height, and so did Onkelos render (Exod. 15:8): נצבו כמו נד, they stood up like a wall, and so did Menachem (p. 121, missing) explain it. נד and נאד do not have the same meaning.

He puts the deeps into treasuries under the earth.