Ark builder (4)
I believe the answer is:
noah
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ark builder</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 noah that I've seen before include "Oh, an ark man" , "Biblical sailor" , "Biblical flood survivor" , "Early boatman" , "Biblical patriarch" .)