FUR. 06-30-2011.

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.