Small mistake (5)
(Other definitions for lapse that I've seen before include "Slip; sounds like circuits" , "Retrogress" , "moral shortcoming" , "Pleas (anag)" , "Slight error as caused by inattention" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">small mistake</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for slip that I've seen before include "Minor error; garment" , "Lose footing as on banana skin" , "Slight mistake" , "Slight error" , "Minor error, stumble" .)