Ancient galley
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ancient galley</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for trireme that I've seen before include "Galley with three banks of oars" , "Ancient vessel with three banks of oars on each side" , "Greek warship" , "Ancient Greek or Roman war galley" , "Ancient galley with three tiers of oars on each side" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ancient galley</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 bireme that I've seen before include "rowing boat" , "ancient craft" , "Ancient galley with two banks of oars on each side" , "Ancient rowed warship" , "old vessel?" .)