or British fibre /ˈfaɪbɚ/
Learner's definition of FIBER
1 [noncount] : plant material that cannot be digested but that helps you to digest other food
It's important to get enough fiber in your diet.
What foods do you recommend as good sources of fiber?
foods that are high in fiber
2 a : a thin thread of natural or artificial material that can be used to make cloth, paper, etc.
[noncount] b : material (such as cloth) that is made from thin threads : something made of fibers
3 [count] : a long, thin piece of material that forms a type of tissue in your body 4 [noncount], formal : strength or toughness of character
with every fiber of your being
: with all of your effort or desire