What does ablegmen mean in Latin?

ablegmen, a noun, means “parts of entrails which were sacrificed”.

What is the genitive of ablegmen?

The genitive singular is ablegminis. ablegmen is neuter, third declension.

In classical Latin, [abˈɫɛɡ.mɛn]; in ecclesiastical (church) Latin, [abˈlɛɡ.men].

noun · neuterthird declension

ablegmen n (genitive ablegminis)

Classical[abˈɫɛɡ.mɛn]Ecclesiastical[abˈlɛɡ.men]

neuterparts of entrails which were sacrificed
Inimixtum est Ablegmina, quod si quis olim Amblegmina fuisse opinentur, non renitar equidemSextus Pompeius Festus, De Verborum Significatione quae Supersunt cum Pauli Epitome 25.9

Seemingly from ab- + legō (“choose, select”) + -men. Possibly compare ἀπολέγω (apolégō).