Now s.w. dial. [UN-2 9. Cf. dial. onlight (1825).] intr. To alight, dismount.
1623. Cockeram, I. Degresse, to vnlight from a Horse.
1796. Mrs. M. Robinson, Angelina, II. 174. Im sure you hadnt no companion when you unlighted.
1847. Halliwell.
1886. in Glouc., Som., and Devon glossaries, etc.