emissarium
From LSJ
ἔξαψις σφοδρὰ μετὰ πολλῆς βίας πίπτουσα ἐπὶ γῆς → a violent flare-up falling on the ground with great force, thunder and lightning
Latin > English (Lewis & Short)
ēmissārĭum: ii, n. emitto,
I an outlet: lacūs, a drain, Cic. Fam. 16, 18; Plin. 33, 4, 21, § 75; Suet. Claud. 20, 32: vomicae, Scrib. Comp. 229; cf. collectionis, id. ib. 206.
Latin > French (Gaffiot 2016)
ēmissārĭum,¹⁵ ĭī, n. (emitto), déversoir : Cic. Fam. 16, 18, 2 ; emissarium lacus Suet. Claud. 20, 32, décharge d’un lac || [fig.] emissarium vomicæ facere Scrib. Comp. 229, vider un abcès.