When she finds our about this, 'fur' will 'fly'. [=she will be very angry]
He made his fortune trading 'furs' in the 17th century.
Her new 'fur' is a full-length mink coat.
(..) to spend on people. Me, I... I don't care about... clothes and money and jewels... and furs, and things like that. Lots of the other girls do, but I never did. (..)1969 Butch Cassidy and the Sundance Kid