Green’s Dictionary of Slang

(UK Und.) to see, to look at.

1753		J. Poulter Discoveries (1774) 42: Glee the Rattler; see the Coach [Ibid.] 43: Pike up the Prancers, and glee in the Lumber; go up Stairs and look in the Room.
1786		Whole Art of Thieving [as cit. 1753].
1799		‘Cant Lang. of Thieves’ Monthly Mag. 7 Jan. n.p.: To Glee the Rattler, To notice a Coach on the road.