Frustrate fly (4)

I believe the answer is:

dash

I believe this clue is a double definition.

'frustrate' is the first definition.
(I know that dash is a more specific form of frustrate)

'fly' is the second definition.
(I've seen this before)

(Other definitions for dash that I've seen before include "Run quickly - little taste - hyphen" , "Hyphen - sprint" , "Hyphen - bother!" , "- - ; panache" , "quite mild oath" .)

I've seen this clue in The Everyman puzzle in The Observer.

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