Akert

In Egyptian mythology, Duat (or Tuat) (also called Akert, Amenthes, or Neter-khertet) is the underworld. This was the region through which the sun god Ra traveled from west to east during the night, and where he battled Apep. It also was the place where people's souls went after death—for judgment. The structure of Duat, and the dangers faced there by dead souls, are detailed in texts such as the Book of Gates and the Book of the Dead.
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[Egyptian] A common name for the abode of the dead.

Akert (Egyptian) Name for the underworld, of which Osiris in his aspect of Un-nefer was the lord. Also the name of the god of the fifth hour of the day.