eg.lat is a proper place name listed with Zoar and Horonaim in announcements concerning Moab.

The attested form functions as a proper place name in geographic lists associated with Moab: it is named after Zoar in Isaiah 15:5 and alongside Zoar and Horonaim in Jeremiah 48:34.

1. A place named in Moab-related geographic lists · dominant

   Both occurrences are tagged Noun · Proper and appear in sequences of place names. In Isaiah 15:5 the APB renders the clause “to Eglath-shelishiyah the third” after Zoar; in Jeremiah 48:34 it renders “from Zoar to Horonaim and Eglath-shelishiyah” amid a cry and desolation announcement.

   Isaiah 15:5Jeremiah 48:34

In the Anselm Project Bible: The APB presents the term as “Eglath-shelishiyah” in both verses, once with “the third.” That added wording cannot be assigned to the lemma alone.