Emily Dickinson Lexicon

SAL'LY, v.i. [Fr. saillir; Arm. sailha; It. salire; Sp. salir; Port. sahir, (l lost;) L. salio. Qu. Gr. ἁλλομαι, which is allied to the Ar. أَلّ alla, or هَلَّ halla, both of which signify to impel, to shoot. See Solar, from L. sol, W. haul, Gr. ἡλιος.]

1. To issue or rush out, as a body of troops from a fortified place, to attack besiegers. They break the truce, and sally out by night. – Dryden.
2. To issue suddenly; to make a sudden eruption.