Norse thunder god (4)
I believe the answer is:
thor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">norse thunder god</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 thor that I've seen before include "Scandinavian thunder-god" , "Norse god of thunder - a weekday is named after him" , "Norse deity" , "Germanic deity" , "Germanic thunder god; early US IRBM" .)