Lunar phase (3,4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lunar phase</span>' is the definition.<br/ ><span class="explanation-format__explanation">(phase of the moon)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for new moon that I've seen before include "emergent body" , "First appearance of a waxing satellite" , "Satellites phase" , "Early lunar crescent" , "Phase of Earth's satellite" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">lunar phase</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know that half moon is a type of lunar phase)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for half-moon that I've seen before include "Earth's satellite at first (or last) quarter" , "Semi-visible natural satellite" .)