Definition of "lightmans"

And then to the Trin'de on the chutes, in the lightmans / The Bube & Ruffian cly the Harman beck & harmans.

1612, Thomas Dekker, Lanthorne and Candle-light‎

Why, you would not be boosing till lightman's in a square crib like mine, as if you were in a flash panny?

1828, Edward Bulwer Lytton Baron Lytton, Pelham, Or, Adventures of a Gentleman

Mr. Kestrel's out to dinner with some of his pals, and he 'most never comes home till lightmans.

2012, Kate Ross, A Broken Vessel