Crossword Genius

Please contribute for arch (5)

Ross

I believe the answer is:

ogive

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

'please contribute' is the wordplay.
'please' becomes 'o' (form of address eg in an ode).
'contribute' becomes 'give' (synonyms).
'o'+'give'='OGIVE'

'for' is the link.

(Other definitions for ogive that I've seen before include "pointed window" , "Lancet arch" , "Feature of Gothic church" , "Pointed or Gothic arch" , "Mount --, Washington's home" .)

I've seen this clue in The Times.
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