Thick part of a wooden seat (5)

I believe the answer is:

dense

'thick' is the definition.
(synonyms)

'part of a wooden seat' is the wordplay.
'part of' indicates the answer is hidden within the clue.
'DENSE' is hidden within 'wooden seat'.

(Other definitions for dense that I've seen before include "Close-knit" , "Thick, compact or crowded" , "Compressed - obtuse" , "Closely packed" , "Slow-witted" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.