طلو ند طلى

طَالٍ ذ A water to which camels come to drink overspread with [ the green substance called ] طُحْلُب [and طُلَوَاآء]. (K, TA.) ― -b2- And (tropical:) A dark night: (AA, K, TA:) as though it smeared [with tar] the forms, or persons, of men, and obscured them. (AA, TA.)