A priest making money in Egypt (7)

I believe the answer is:

piastre

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

'money in egypt' is the definition.
'piastre' can be an answer for 'money' (I've seen this before). I am unsure of the 'in egypt' bit.

'a priest making' is the wordplay.
'making' indicates anagramming the letters.
'a'+'priest'='apriest'
'apriest' anagrammed gives 'PIASTRE'.

Can you help me to learn more?

(Other definitions for piastre that I've seen before include "bit of money" , "Small amount of money" , "Former coin in some Middle Eastern countries" , "Syrian money" , "Foreign currency" .)

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

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