subs. (thieves).A policeman: see BEAK.
18[?]. Globe [A Dictionary of Slang, Jargon & Cant]. The prisoner, seeing a detective watching him, called out to a companion, Theres a ROSSER! The term is, as the magistrate opined, a new one.
1893. P. H. EMERSON, Signor Lippo, xviii. If the ROZZERS was to see him in bona clobber theyd take him for a gun. Ibid., xx. So I took on knocker up, but when I began the ROZZERS was down on me.
1898. BINSTEAD, A Pink Un and a Pelican, 237. What does she do? Lor doomy! she acksherly sticks er ead out o winder an calls up a ROZZER!
1901. The Sporting Times, 6 April, 1, 4. From calmness I dont mean to lapse, I scorn you counterjumping chaps, Or youre some ROZZERS nark, perhaps.