Farmers Slang & Its Analogues. 18901909, rev. 2022.
Circling-boy
subs. (old).A rook; swindler. Nares says a species of roarer; one who in some way drew a man into a snare, to cheat or rob him. See Gifford.Ben Jonson, Bartholomew Fair, iv., 3, p. 481.