Green’s Dictionary of Slang

1. a carrot.

1859, 1860		Hotten Dict. of Modern Sl. etc.
1873		Sl. Dict.
1890		Northampton Mercury 12 Apr. 12/4: ‘Shif,’ fish; ‘torrac,’ carrot; ‘yad,’ day; ‘kool,’ look; ‘sey,’ yes; ‘on’, no; ‘pac,’ cap; ‘reeb,’ beer, ‘yob,’ boy; are all perfect specimens [i.e. of backslang].
1890–1904		Farmer & Henley Sl. and Its Analogues.

2. the penis; thus a phr. of dismissal ekat a torrac, take a carrot (presumably + and shove it... ).

1980

Maledicta IV:2 (Winter) 192: Sometimes the process is more complicated, and we have the double inversion seen in the use of shunter’s pole for prick with e.g. torrac = carrot.