Obstetrics (9)
I believe the answer is:
midwifery
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">obstetrics</span>' is the definition.<br/ ><span class="explanation-format__explanation">(synonyms)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for midwifery that I've seen before include "delivery business" , "delivery service" .)