Incidentally (2,3,3)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">incidentally</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that incidentally can be written as by the way)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for by the way that I've seen before include "In point of fact" , "In passing, while we're on the subject" , "At the roadside - incidentally" , "At the side of the path?" , "Incidentally, as a rather irrelevant comment" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">incidentally</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 by the by that I've seen before include "In passing" , "incidentally" .)