Crossword Genius

Red flower in front of blue, somewhere to go (8)

Ross

I believe the answer is:

lavatory

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'red flower' is the definition.
Although both the answer and definition are singular nouns, I don't see how they can define each other.

'in front of blue somewhere to go' is the wordplay.
'in front of' is a charade indicator (letters next to each other) (some letters go in front of others).
'blue' becomes 'tory' (I've seen this in other clues).
'somewhere to go' becomes 'lava' (I can't explain this - if you can you should give a lot more credence to this answer).
'tory' after 'lava' is 'LAVATORY'.

Can you help me to learn more?

(Other definitions for lavatory that I've seen before include "one's flushed" , "Private chamber" , "Ladies or Gentlemen" , "Toilet" , "Something to go on" .)

I've seen this clue in The Telegraph.
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