quatriduum
From LSJ
ἀλλὰ μὴν καὶ ἀναπαύσεώς γε δεομένοις ἡμῖν νύκτα παρέχουσι κάλλιστον ἀναπαυτήριον → and again, we need rest; and therefore the gods grant us the welcome respite of night
Latin > English
quatriduum quatridui N N :: period of four days; [~o => in the four days from now, within four day of]
Latin > English (Lewis & Short)
quătrĭdŭum: v. quadriduum.
Latin > French (Gaffiot 2016)
quătrĭdŭŭm,¹⁴ v. quadriduum.