The most common and most likely answer to this crossword clue is the 6 letter word TIPPEX
T
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P
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The straight part
We know that "White correcting fluid" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case white correcting fluid = tippex.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TIPPEX mean?
TIPPEX noun- A particular brand of correction fluid, or correction fluid in general.
- A particular brand of correction tape, or correction tape in general.
- To delete using correction fluid.