Ancient warship (6)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ancient warship</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for bireme that I've seen before include "Rowed boat long ago" , "Ancient vessel" , "Old craft with two banks of oars" , "old vessel?" , "with two tiers" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ancient warship</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 trireme that I've seen before include "Greek warship" , "Galley with three banks of oars" , "Long rowing boat" , "Ancient galley with three tiers of oars on each side" , "Ancient warship with three banks of oars" .)