Pennies I organised in a heap (5)

I believe the answer is:

piled

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

'in a heap' is the definition.
I can't tell whether this defines the answer.

'pennies i organised' is the wordplay.
'pennies' becomes 'p' (abbreviation for pence).
'organised' becomes 'led' (I can't justify this - if you can you should believe this answer much more).
'p'+'i'+'led'='PILED'

Can you help me to learn more?

(Other definitions for piled that I've seen before include "put in a heap" , "Arranged in stacks" , "Heaped" .)

I've seen this clue in The Guardian.

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