Design using cutting included in sketchbook (4)

I believe the answer is:

etch

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

'design using cutting included' is the definition.
I can't tell whether this defines the answer.

'in sketchbook' is the wordplay.
'in' indicates a hidden word.
'ETCH' is hidden in the letters of 'sketchbook'.

Can you help me to learn more?

(Other definitions for etch that I've seen before include "Carve or engrave into surface" , "Engrave deeply" , "Engrave metal plate using acid" , "Engrave (glass/metal)" , "Wear away by chemical reaction" .)

I've seen this clue in The Times.

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