Crossword Genius

Basilica ends (5)

Ross

I believe the answer is:

apses

(Other definitions for apses that I've seen before include "Domed areas in churches" , "Does 'e pass these in churches?" , "Parts of church" , "Domed areas in church, usually where the altars are" , "Domed areas in church, usually where the altar is" .)

I've seen this clue in The Wall Street Journal.
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