Crossword Genius

Old Italian taper on Bonfire Night (5,6)

Ross

I believe the answer is:

roman candle

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'bonfire night' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

'old italian taper on' is the wordplay.
'old italian' becomes 'roman' (I've seen this before).
'taper' becomes 'candle' (synonyms).
'on' means one lot of letters go next to another.
'roman'+'candle'='ROMAN CANDLE'

Can you help me to learn more?

(Other definitions for roman candle that I've seen before include "Pyrotechnic device" , "Example of fireworks" , "Type of firework" , "Firework projecting succession of coloured stars" , "Cylindrical firework" .)

I've seen this clue in The Mirror.
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