|Mr. Collins often talked fustian to others|
He turned his head to look at her, his eyes narrowed, and their expression was by no means pleasant. “Are you thinking of being so unwise as to cross swords with me?” he demanded. “I shan’t pretend to misunderstand you, Cousin, and I will leave you in no doubt of my own meaning! If you imagine that I will ever permit that puppy to marry my sister, you have yet something to learn of me!”In the above context, what does the term mean?
“Pooh!” said Sophy. “Mind your horses, Charles, and don’t talk fustian to me."
For the definition, click on this online dictionary link.