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Use "knockers" in a sentence
"But it creates new problems fo-r more conservative Democrats in some of the nation's closest contests — those that could tip the balance of power in Congress — who aren't getting millions of dollars worth of TV ads, election mailings and door-knockers from the groups."
"We have no sympathy with what you call the knockers who are in high places in the Motherland."
"She talked about the ones who shoot the cows in the forehead, "knockers" I think she called it."