Γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ → The fool laughs even when there's nothing to laugh at
P. and V. λίμνη, ἡ, P. ἕλος, τό, Ar. and P. τέλμα, τό.
of a marsh, adj.: P. and V. ἕλειος, Ar. λιμναῖος.