Big guns rarely lit? (9)

I believe the answer is:

artillery

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

'big guns' is the definition.
(I've seen this before)

'rarely lit?' is the wordplay.
'rarely lit' can be anagrammed to 'ARTILLERY'.
However, I'm unsure how the anagram is indicated.

Can you help me to learn more?

(Other definitions for artillery that I've seen before include "Ordnance" , "Guns, cannons etc" , "Missile-launchers and the like" , "Large pieces" , "Army unit that uses big guns" .)

I've seen this clue in The Irish Independent.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.