Guff (3)
I think it could be either:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">guff</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for lip that I've seen before include "Rim; impudence (slang)" , "Sauce" , "Edge, rim" , "Rim; impertinence" , "Rim of an orifice" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">guff</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that guff can be written as rot)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for rot that I've seen before include "'Decay, decompose (3)'" , "SECOND PART OF 25" , "Decompose; rubbish" , "Deterioration" , "Balderdash" .)