What is the meaning of Jꜣt?

mound, especially as a sacred site or location in the Afterworld

ruin, mound of ruins

cultivated land, fields

regions, lands, foreign lands

spine, backbone

back

middle of a body of water (lake or river)

standard for carrying cultic images and objects

Part of a place name in the Afterworld. The meaning of this term is uncertain.

Iat, a goddess who serves as nurse to the dead, likely a goddess of milk

New Kingdom form of ꜣꜣ (“mound of ruins”)

Source: wiktionary.org