Ship of the desert (5)
I believe the answer is:
camel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">ship of the desert</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 camel that I've seen before include "quadruped" , "Bearer of burdens" , "Pale brown - animal" , "Light yellowish-brown colour - ruminant" , "Beastly type" .)