Scottish candle centre (4)
I believe the answer is:
wick
This might be a double definition.
'scottish candle' is the first definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps there's an association between them I don't understand?
'centre' is the second definition.
(I have seen 'Centre of candle ' mean 'wick' so perhaps 'centre' could also mean 'wick')
Can you help me to learn more?
(Other definitions for wick that I've seen before include "Cord conveying liquid by capillary action" , "Northern town" , "Candle's thread" , "Candle fibre" , "See 1" .)