Student or Learner
I started to read "the gift of the magi" and I couldn't understand the following sentence
Pennies saved one and two at a time by bulldozing the grocer and the vegetable man and the butcher until one's cheeks burned with the silent imputation of parsimony that such close dealing implied
especially the red words.
Can somebody help me with that since the word bulldozing has one or two meanings that I can't find logic in this context.
thanks in advance.