Wave which is not "tidal” (7)
I believe the answer is:
tsunami
(Other definitions for tsunami that I've seen before include ""Harbour wave"" , "crashing bore" , "wall of water" , "stormy sea" , "Huge destructive sea wave" .)
I believe the answer is:
tsunami
(Other definitions for tsunami that I've seen before include ""Harbour wave"" , "crashing bore" , "wall of water" , "stormy sea" , "Huge destructive sea wave" .)