Crossword Genius

Sense perception essential for catching this when flipped? (5)

Ross

I believe the answer is:

crepe

I'm a little stuck... Click here to teach me more about this clue!

'catching this when flipped?' is the definition.
The definition suggests a singular noun which matches the answer.

'sense perception essential' is the wordplay.
'CREPE' is hidden backwards within the letters.
However, I'm not sure how the hidden word is indicated.

'for' is the link.

Can you help me to learn more?

(Other definitions for crepe that I've seen before include "Thin wrinkled fabric" , "Crinkly fabric and French pancake" , "Crinkly paper" , "One fabric" , "Crinkled paper or fabric" .)

I've seen this clue in The Telegraph.
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