Undulating (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">undulating</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 wavy that I've seen before include "Sinuous" , "Rippled" , "Undulating" , "full of bends" , "Curly (hair)" .)
(Other definitions for hilly that I've seen before include "Not flat (country)" , "Descriptive of undulating upland" , "Mountainous" , "Unlike flat land" , "Like Chiltern or Cotswolds areas" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">undulating</span>' is the definition.<br/ ><span class="explanation-format__explanation">('roll' can be a synonym of 'undulate')</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for rolling that I've seen before include "Type of stock" , "Going round - a type of mill" , "extremely rich" , "-- Stock; -- pin" , "Steady and continuous" .)