In the main submarine hazards (8)
I believe the answer is:
'hazards' is the definition.
Although both the answer and definition are plural nouns, I can't understand how they can define each other.
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for icebergs that I've seen before include "Huge masses of frozen water" , "Large masses of frozen water" , "Frozen mountains in the sea" , "Large masses floating at sea in polar regions" , "Large masses of floating ice" .)