Dromedaries (6)
I believe the answer is:
camels
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">dromedaries</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 camels that I've seen before include "Dromedaries" , "Old planes" , "Animals known as ships of the desert" , "Mammals of desert areas" , "Arabs call them ships of the desert" .)