Crust (5)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">crust</span>' is the definition.<br/ ><span class="explanation-format__explanation">(thesaurus)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for shell that I've seen before include "Carapace or cartridge" , "ammunition" , "Bit of explosive" , "Conch, perhaps" , "Outer covering of 1 across, say" .)
(Other definitions for char that I've seen before include "Domestic employee" , "Brown" , "Blacken by burning" , "clean > burn" , "Singe, scorch" .)