Crossword Genius

Former thoughts from Pascal, dismissing a European claim at work? (8)

Ross

I believe the answer is:

expenses

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

'former thoughts' is the definition.
Although both the answer and definition are plural nouns, I cannot understand how they can define each other.

'from pascal dismissing a european claim at work?' is the wordplay.
I cannot quite see how this works, but
'from' could be 'ex' ('from' in Latin) and 'ex' is present in the answer.
'european' could be 'e' (abbreviation e.g. EU) and 'e' is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for expenses that I've seen before include "Costs incurred in the performance of one?s job" , "Reimbursed monies spent in the course of work" , "Costs incurred on business" , "Costs incurred on behalf of, say, employer" , "Outlays" .)

I've seen this clue in The Independent.
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