Makes patterns crossing nave (8)

I believe the answer is:

transept

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'crossing nave' is the definition.
'transept' can be an answer for 'nave' (thesaurus). I'm not certain of the 'crossing' bit.

'makes patterns' is the wordplay.
'makes' is an anagram indicator.
'patterns' anagrammed gives 'TRANSEPT'.

Can you help me to learn more?

(Other definitions for transept that I've seen before include "Part of church off aisle" , "Something dividing church in two" , "Arm of church body" , "Wing of cross-shaped church" , "It crosses the nave in church" .)

I've seen this clue in The Irish Times.

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