fur 
/ˈfɚ/ noun
plural furs /ˈfɚ/ noun 1 [noncount] : the hairy coat of an animal especially when it is soft and thick
▪ The cat has black-and-white fur. ▪ The rabbit's fur is soft. 2 a : the fur of an animal used for clothing [noncount] ▪ Her gloves are lined with fur. [count] ▪ He made his fortune trading furs in the 17th century. — often used before another noun ▪ a fur coat/collar
b [count] : a piece of clothing (such as a coat) made with fur
▪ Her new fur is a full-length mink coat.
c [noncount] : a material that looks and feels like the fur of an animal
▪ a teddy bear with soft fur ▪ fake/imitation fur 3 [noncount] Brit : a hard material that forms in metal pipes, boilers, etc. : scale
▪ The cat has black-and-white fur. ▪ The rabbit's fur is soft.
b [count] : a piece of clothing (such as a coat) made with fur
▪ Her new fur is a full-length mink coat.
c [noncount] : a material that looks and feels like the fur of an animal
▪ a teddy bear with soft fur ▪ fake/imitation fur
fur flies
informal ◊When (the) fur flies, someone becomes very angry or upset.
▪ When she finds our about this, fur will fly. [=she will be very angry]
▪ When she finds our about this, fur will fly. [=she will be very angry]
— furred /ˈfɚd/ adjective
▪ a thickly furred animal ▪ (Brit) a thickly furred boiler
/ˈfɚd/ adjective ▪ a thickly furred animal ▪ (Brit) a thickly furred boiler
