Crossword Genius

Small crease? Don't be too expansive (6)

Ross

I believe the answer is:

scrimp

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'don't be too expansive' is the definition.
I can't judge whether this definition defines the answer.

'small crease?' is the wordplay.
'small' becomes 's' (abbreviation - e.g. clothes size).
'crease?' becomes 'crimp' ('crimp' can be a synonym of 'crease').
's'+'crimp'='SCRIMP'

Can you help me to learn more?

(Other definitions for scrimp that I've seen before include "Pinch and save" , "Keep short" , "To pinch pennies" , "Skimp, stint" , "Watch the pennies" .)

I've seen this clue in The Independent.
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