Or, Thy lap is like a moon-shaped bowl where mixed wine faileth not.” The wine in the bowl rising to the brim adds to the beauty of the vessel, and gives a more pleasing image to the eye. Some interpret, “thy girdle is like a moon-shaped bowl,” or “bears a moon-shaped ornament” (compare Isaiah 3:18).
Set about with lilies - The contrast is one of colors, the flowers, it may be, representing the purple of the robe. “The heap of wheat is not seen because covered by the lilies.”