Crossword Genius

End when heartbreak unknown in church portico (7)

Ross

I believe the answer is:

narthex

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

'church portico' is the definition.
(I've seen this before)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Another definition for narthex that I've seen is " church portico".)

I've seen this clue in the Sydney Morning Herald.
Want a hint initially instead of a full solution? Install my app