Pertaining to the sea (6)
I believe the answer is:
marine
(Other definitions for marine that I've seen before include "Concerned with the sea" , "Airmen (anag.)" , "Soldier-sailor" , "Relating to the sea" , "jolly" .)
I believe the answer is:
marine
(Other definitions for marine that I've seen before include "Concerned with the sea" , "Airmen (anag.)" , "Soldier-sailor" , "Relating to the sea" , "jolly" .)