Crossword Genius

Ground for conspiracy (4)

Ross

I believe the answer is:

plot

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

'conspiracy' is the definition.
(I've seen this in another clue)

'ground' is the wordplay.
I cannot really understand how this works, but
'ground' could be 'lot' (I've seen this in another clue) and 'lot' is found within the answer.
A single letter 'p' remains which might be clued in a way I don't understand.
This explanation may well be incorrect...

'for' acts as a link.

Can you help me to learn more?

(Other definitions for plot that I've seen before include "A scheme, or a parcel of land" , "Draw (graph)" , "intrigue" , "Graph; piece of ground" , "bed" .)

I've seen this clue in The Globe and Mail and The Telegraph.
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