Sentence:  A dreadful day it was for young Dobbin when one of the youngsters of the school, having run into the town upon a poaching excursion for hardbake and <WSD>polonies</WSD>, espied the cart of Dobbin & Rudge, Grocers and Oilmen, Thames Street, London, at the Doctor's door, discharging a cargo of the wares in which the firm dealt. 
Meaning of the word marked with <WSD> tags:  A kind of sausage made of meat that has been only partly cooked.