Frustrate by using very thin sheet? (4)

I believe the answer is:

foil

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This might be a double definition.

'frustrate by using' is the first definition.
'foil' can be an answer for 'frustrate' (synonyms). I am not certain of the 'by using' bit.

'thin sheet?' is the second definition.
(I've seen this in another clue)

'very' is the link.

Can you help me to learn more?

(Other definitions for foil that I've seen before include "Food kept fresh in this" , "hamper" , "Fencing rapier" , "Baffle" , "Thin metal - sword" .)

I've seen this clue in The Irish Independent.

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