Material for candles entirely wrapped in fibres (6)
I believe the answer is:
tallow
'material for candles entirely wrapped in fibres' is the definition.
I can't judge whether this definition defines the answer.
'entirely wrapped in fibres' is the wordplay.
'entirely' becomes 'all' (I've seen this in another clue).
'wrapped in' means one lot of letters goes inside another.
'fibres' becomes 'tow' (I have seen 'Prepared fibres' mean 'tow' so perhaps 'fibres' could also mean 'tow').
'all' inserted inside 'tow' is 'TALLOW'.
Can you help me to learn more?
(Other definitions for tallow that I've seen before include "Candle grease" , "Animal oil used in making soap and candles" , "Fat used for soap/candles" , "Soap ingredient" , "Fat processed for making candles" .)