Relating to Celtic poets (6)
I believe the answer is:
bardic
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">relating to celtic poets</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 bardic that I've seen before include "Like an Eisteddfod poet" , "Poetic" , "Relating to Celtic poets" , "of a Welsh poet" , "Like an ancient poet" .)