Moderately cold (6)
(Other definitions for chilly that I've seen before include "Parky" , "Unpleasantly cold - sounds like hot stuff" , "Appreciably cold" , "Descriptive of cold weather" , "Lacking warmth or feeling" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">moderately cold</span>' is the definition.<br/ ><span class="explanation-format__explanation">(similar in meaning)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for cool that I've seen before include "Unemotional; excellent" , "Casual and confident - not heated" , "Super!" , "Pleasantly fresh, not too cold" , "Hip - not warm" .)