Green’s Dictionary of Slang

(UK Und.) to trick, to deceive.

1855		Yokel’s Preceptor title page: Here will be found A Capital Show-Up of the Most Infamous Pegging Kens, Sharking Fakes, Gulping Holes, Bellowsing Rooms, Fencing Cribs, Molly Clubs, Dossing Hotels, Fleecing Holes.
1878		Luton Times 29 Mar. 6/2: He had got lots of ‘quids’ and ‘tin’, having fallen over a ‘mahogany flat,’ who was ‘blooming tight’ [...] and who he had walked up and down the garden and ‘bellowsed’ him.