Crossword Genius

Your holiday was where ? (7)

Ross

I believe the answer is:

getaway

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'where ?' is the definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.

I don't understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for getaway that I've seen before include "Escape" , "flight" .)

I've seen this clue in The Independent.
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