mis·car·riage 
(mĭskăr′ĭj, mĭs-kăr-)
(mĭskăr′ĭj, mĭs-kăr-)n.
1. The spontaneous, premature expulsion of a nonviable embryo or fetus from the uterus. Also called spontaneous abortion.
2.
a. Bad administration; mismanagement: the miscarriage of the enterprise.
b. A failure of administration or management: a miscarriage of justice.