foam: P. and V. ἀφρός, ὁ (Plato, Timaeus 83D).
spray: P. and V. ζάλη, ἡ (Plato), V. πέλανος, ὁ.
lees: Ar. τρύξ, ἡ.
Met., of worthless people: Ar. and P. περίτριμμα, τό, κάθαρμα, τό.