Mariner's cry (4)
I believe the answer is:
ahoy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">mariner's cry</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for ahoy that I've seen before include "Temporarily blind" , "Sailor's call for attention" , "Cry at sea" , "A sailor's call to a ship" , "Naval call for attention" .)