Where does “Χοίακ” come from?

Χοίακ (Ancient Greek) comes from Egyptian kꜣ-ḥr-kꜣ, from Egyptian kꜣ, from Egyptian ḥr, from Proto-Afro-Asiatic x̣al.

Χοίακ (Ancient Greek): Choiak, the fourth month of the Ancient Egyptian calendar, corresponding roughly to December