Pastoral deity (4)
I believe the answer is:
faun
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">pastoral deity</span>' is the definition.<br/ ><span class="explanation-format__explanation">(half-goat, half-man in classical mythology)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for faun that I've seen before include "This old deity" , "Roman deity, in the form of a man with a goat's horns, legs and tail" , "Rural deity, half-man, half-goat" , "Mr Tumnus or his ilk" , "Rural deity with the form of a man-goat" .)