Crossword Genius

Lights that fused singe it (7)

Ross

I believe the answer is:

ignites

I'm a little stuck... Click here to teach me more about this clue!

'lights' is the definition.
(I've seen this in another clue)

'fused singe it' is the wordplay.
'singe it' can be anagrammed to 'IGNITES'.
But, I am not clear how this is indicated.

'that' acts as a link.

Can you help me to learn more?

(Other definitions for ignites that I've seen before include "Catches fire" , "Sets on fire" , "Sets alight" , "lights" .)

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