White dwarf, say (4)
I believe the answer is:
star
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">white dwarf say</span>' is the definition.<br/ ><span class="explanation-format__explanation">(white dwarf is a kind of star)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for star that I've seen before include "A heavenly body or film favourite" , "Red Dwarf?" , "For example, Marilyn Monroe" , "Pointed symbol" , "Famous entertainer" .)