Structure employed in perpendicular churches (4)

I believe the answer is:

arch

'structure' is the definition.
(I know that arch is a type of structure)

'employed in perpendicular churches' is the wordplay.
'employed in' says the answer is hidden in the clue.
'ARCH' is hidden within 'perpendicular churches'.

(Other definitions for arch that I've seen before include "Curved vault" , "Affectedly playful like senior angel" , "Playfully superior" , "Cunning; span" , "Chief - part of foot" .)

I've seen this clue in The Times.

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