fur

• fur
• 1 [uncountable] the thick soft hair that covers the bodies of some animals, such as cats, dogs, and rabbits ➔ furry (1)
• 2 [uncountable and countable]the skin of a dead animal with the fur still attached:
• a fur coat
• a fur-lined jacket
• a ban on fur farming(=keeping and killing animals for their fur)
• 3 [countable] a coat or piece of clothing made of fur:
• Lady Yolanda was swathed in elegant furs.
• 4 [uncountable] a material that looks and feels like fur
• imitation/fake/artificial etc fur
• a pair of gloves trimmed with fake fur
• 5 [uncountable] a harmful or unpleasant substance that sometimes forms on surfaces that are always wet, such as water pipes [= scale]
• 6

   the fur flies

  used to say that an angry argument or fight starts:
• If you're both feeling frustrated, the fur may fly.

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.