View model scratching bottom (4)
I believe the answer is:
idea
'view' is the definition.
(I know that idea is a type of view)
'model scratching bottom' is the wordplay.
'model' becomes 'ideal' (ideal can mean model or perfect).
'scratching bottom' means to remove the last letter.
'ideal' with its final letter taken away is 'IDEA'.
(Other definitions for idea that I've seen before include "Product of the mind" , "Sudden inspiration?" , "Thought; concept" , "Aim" , "Brainwave" .)