Source of inspiration? (4)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">source of inspiration</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 muse that I've seen before include "Source of inspiration; rock group" , "Be absorbed in thought" , "Ponder, say meditatively" , "Contemplate -- a goddess of the liberal arts" , "Ponder in meditative way" .)
(Other definitions for lung that I've seen before include "breather" , "Organ providing oxygen to the blood" , "One of a pair of organs in the ribcage" , "Air bag?" , "Organ used for breathing" .)