__ shanty (3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">shanty</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that shanty can be written as shack)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for shack that I've seen before include "Hovel" , "Rough dwelling" , "Rough hut or cabin" , "basic accommodation" , "Crudely built hut" .)
(Other definitions for sea that I've seen before include "North, say" , "The Aegean, for example" , "Lesser ocean" , "It's stocked with fish" , "eg Dead, Red" .)
(Other definitions for leanto that I've seen before include "Roof" , "shed" .)