Garden mollusc (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">garden mollusc</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 slug that I've seen before include "Garden mollusc" , "draught" , "Wallop" , "gulp!" , "Terrestrial mollusc" .)
(Other definitions for snail that I've seen before include "10 ac mollusc" , "Slow mover" , "Slow slithery animal" , "Slow-moving creature" , "Not one of the fleet" .)