Green’s Dictionary of Slang

1. a large meat fork.

1818

‘A. Burton’ Adventures of Johnny Newcome II 101: The cook’s tormentors in his hands. [Ibid.] 256: (I) Cook’s tormentors, meat forks.

2. a water-squirter.

1821–6		‘Bill Truck’ Man o’ War’s Man (1843) 128: Brandishing his tormentors over the heads of the refractory with infinite dexterity.
1880		Manchester Eve. News 28 May 2/6: The prisoner, who had a ‘lady’s tormentor’ in his hand, leaned over and squirted the contents in his eye, ear and mouth.
1884		Ally Sloper’s Half Holiday 31 May38/2: It is rumoured that the sellers of ladies’ tormentors are in the employ of large linen drapery firms.
1894		A. Morrison Tales of Mean Streets (1983) 32: Billy bought a ladies’ tormentor and began to squirt it at Lizerunt.
1902		Portsmouth Eve. News 6 June 3/7: ‘Ladies Tormentors’ [...] There were three persons brought up yesterday charged with [...] selling water-squirts.

3. a back-scratcher.

1890–1904

Farmer & Henley Sl. and Its Analogues.