Land-bound bird
I believe the answer is:
emu
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">land-bound bird</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 emu that I've seen before include "Aussie bird" , "Hull's character" , "Physics unit" , "Ratite" , "it can't get off the ground" .)