Peaks of waves (6)
I believe the answer is:
crests
(Other definitions for crests that I've seen before include "Emblems of families" , "Topmost ridges of mountains" , "Tufts on birds' heads, or tops of waves" , "summits" .)
I believe the answer is:
crests
(Other definitions for crests that I've seen before include "Emblems of families" , "Topmost ridges of mountains" , "Tufts on birds' heads, or tops of waves" , "summits" .)