Ukrainian port (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ukrainian port</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for odessa that I've seen before include "Do seas come into Ukrainian city?" , "Port city on the Black Sea" , "Black Sea location" , "Ukrainian location" , "Ukrainian Black Sea port" .)