A swelling or heap of water.
Deep calleth unto deep at the noise of thy waterspouts: all thy waves and thy BILLOWS are gone over me. ( Psalm 42:7 )
bil'-o (gal, "a great rolling wave"):
Figuratively, of trouble, "All thy waves and thy billows are gone over me" (Psalms 42:7; compare \Jon 2:3\).
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