Tumbled (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">tumbled</span>' is the definition.<br/ ><span class="explanation-format__explanation">(to tumble is to fall over)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for fell that I've seen before include "Dropped to the ground" , "Knock down - came down" , "was deflating" , "stretch of moorland" , "Toppled" .)
(Other definitions for rolled that I've seen before include "Rotated" , "Moved along on wheels" , "Furled" .)
(Another definition for cascaded that I've seen is " Poured downwards as a waterfall".)