Bores Kent about something at the side of the road (9)

I believe the answer is:

kerbstone

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

'something at the side of the road' is the definition.
I can't tell whether this defines the answer.

'bores kent about' is the wordplay.
'about' indicates an anagram.
'bores'+'kent'='boreskent'
'boreskent' anagrammed gives 'KERBSTONE'.

Can you help me to learn more?

(Other definitions for kerbstone that I've seen before include "Pavement edging block" , "Pavement edge" , "that's set by the road" , "edging for flags?" .)

I've seen this clue in The Daily Express.

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.