It's just one thing after another (4)
I believe the answer is:
list
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">it's just one thing after another</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 list that I've seen before include "Slope, slant, lean" , "band > record" , "Italian port" , "Of ship, lean to one side" , "Items or names written or printed consecutively" .)