Hide another impression inside (4)
I believe the answer is:
idea
'hide another impression inside' is the definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.
'hide another impression inside' is the wordplay.
'inside' says the answer is hidden in the clue.
'IDEA' is hidden in the letters of 'hide another impression'.
Can you help me to learn more?
(Other definitions for idea that I've seen before include "Creative spark" , "intellectual product" , "Brainwave" , "A suspicion of" , "Content of cognition" .)