hydrargyrus
From LSJ
ἔκδοτον σεαυτὴν τῷ σύροντι ποταμῷ τῶν πραγμάτων ἐᾶσαι → abandon yourself to the eddying flow of events
Latin > English (Lewis & Short)
hydrargyrus: i, m., = ὑδράργυρος>,
I quicksilver artificially prepared, Plin. 33, 8, 41, § 123; 33, 3, 20, § 64.