From side to side (2-3-3)
(Other definitions for to-and-fro that I've seen before include "Back and forth" , "Hither and thither" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">from side to side</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 across that I've seen before include "Clues like this" , "Facing" , "written like this?" , "Unlike this clue" , "ax" .)