Area provided a source of fibre (5)
I believe the answer is:
agave
'a source of fibre' is the definition.
I can't judge whether this defines the answer.
'area provided' is the wordplay.
'area' becomes 'a' (maths abbreviation).
'provided' becomes 'gave' (giving is a kind of providing).
'a'+'gave'='AGAVE'
Can you help me to learn more?
(Other definitions for agave that I've seen before include "native growing up in tropical America" , "Succulent plant" , "Plant, source of sisal" , "plant in Mexico" , "Tropical plant" .)