Kind of wave; kind of bore (5)
I believe the answer is:
tidal
<span class="explanation-format__ClueExplanation">I believe this clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">kind of wave</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >'<span class="explanation-format__original">kind of bore</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ ></span>
(Other definitions for tidal that I've seen before include "going with the flow" , "(Waters) subject to moon/sun" , "Like waves" , "Concerning regular changes in sea level" , "Going back and forth" .)