Conventional view of Seabrook (10)

I believe the answer is:

mainstream

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

'conventional' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for mainstream that I've seen before include "According to Standard" , "conventional activities" , "Current" , "Conventional, normal" , "Relating to what is normal or standard" .)

I've seen this clue in the Sydney Morning Herald.

Want a hint initially instead of a full solution? Install my app