וּֽבְשִׁלְיָתָ֞הּ הַיּוֹצֵ֣ת ׀ מִבֵּ֣ין רַגְלֶ֗יהָ וּבְבָנֶ֙יהָ֙ אֲשֶׁ֣ר תֵּלֵ֔ד כִּֽי־תֹאכְלֵ֥ם בְּחֹֽסֶר־כֹּ֖ל בַּסָּ֑תֶר בְּמָצוֹר֙ וּבְמָצ֔וֹק אֲשֶׁ֨ר יָצִ֥יק לְךָ֛ אֹיִבְךָ֖ בִּשְׁעָרֶֽיךָ׃
그 다리 사이에서 나온 태와 자기의 낳은 어린 자식을 가만히 먹으리니 이는 네 대적이 네 생명을 에워싸고 맹렬히 쳐서 곤란케 하므로 아무 것도 얻지 못함이리라
Rashi
ובשליתה AND TOWARDS HER שליה — i.e. towards her little children; towards all these will her eye be evil when she eats one of them so that she will not give of the flesh to those that are still with her (to those that are still living).
Ibn Ezra
The placenta is the place where the fetus lives while in its mother’s womb.
Rashbam
שליתה, according to the Talmud Niddah 24, literally her afterbirth. The Talmud, in this case quotes the peshat, plain meaning.