Green’s Dictionary of Slang

market, esp. Covent Garden; thus ogging ot tekram, going to market.

1859		Hotten Dict. of Modern Sl. etc. 128: NI-OG OT TAKRAM, going to market.
1864, 1867, 1870		Hotten Sl. Dict. [as cit. 1859].
1873		Sl. Dict. 355: Ogging ot tekram going to market.
1882		Sydney Sl. Dict. (2 edn) 11: Ogging ot Tokram - Going to market.
1890		Northampton Mercury 12 Apr. 12/4: The phrase ‘niog ot tekram’ [is] constantly in use by costers’.
1908		St Andrews Citizen 18 July 1/1: [advert] LLA ‘MOOR EMOH SDEEN’ Texn ot Enalrafcam Recorg ni Tekram Teerts.
1977		D. Powis Signs of Crime 204: Tekram Any street market, once only the Covent Garden or Finsbury markets (London backslang).