Crossword Genius

Wooden model? (6)

Ross

I believe the answer is:

twiggy

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This might be a double definition.

'wooden' is the first definition.
Both the answer and definition are adjectives. Maybe they are linked in a way I don't understand?

'model?' is the second definition.
(I've seen this before)

Can you help me to learn more?

(Other definitions for twiggy that I've seen before include "Sticky" , "1960s model, thin as a piece of branch" , "leaves stripped" .)

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