Peaceful ocean (7)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
pacific
I believe this is a double definition.
'peaceful' is the first definition.
('pacific' can be similar in meaning to 'peaceful')
'ocean' is the second definition.
(Pacific is an example)
(Other definitions for pacific that I've seen before include "Largest ocean" , "Peaceable" , "Avoiding conflict" , "Ecuador's ocean" , "water" .)