Crossword Genius

It glows at the end of three months (5)

Ross

I believe the answer is:

ember

This clue is a double definition.

'it glows' is the first definition.
(I've seen this before)

'the end of three months' is the second definition.
(September, November and December)

'at' acts as a link.

(Other definitions for ember that I've seen before include "what causes a warm glow" , "Burning coal" , "Piece of live coal" , "showing residual fire" , "Remnant of bonfire" .)

I've seen this clue in The Mirror.
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