Forearm bone (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">forearm bone</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 ulna that I've seen before include "Thinner of two long bones in forearm" , "a section of framework" , "Long bone in the arm" , "One of two bones of the forearm" , "The longer and inner bone in forearm" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">forearm bone</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 radius that I've seen before include "Straight line from circle's centre to circumference" , "Centre-circumference length" , "Straight line from centre to perimeter of a circle" , "Part of build-up of arms" , "Outer arm bone" .)