Certainly not the Ocean of Storms! (7)

I believe the answer is:

pacific

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

'ocean of storms' is the definition.
'pacific' can be an answer for 'ocean' (Pacific is an example). I am not certain of the 'of storms' bit.

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for pacific that I've seen before include "Non-combatant" , "Non-combative" , "water" , "Largest ocean" , "Peaceful in intent" .)

I've seen this clue in the Evening Standard.

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