Strong’s Hebrew
H4850 — Mrathayim
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
מְרָתַיִם
Mrathayim — pronounced mer-aw-thah'-yim
dual of 4751 feminine; double bitterness; Merathajim, an epithet of Babylon:--Merathaim. see H04751
1 occurrence in the KJV.
Jeremiah 50:21
Go up against the land of Merathaim, even against it, and against the inhabitants of Pekod: waste and utterly destroy after them, saith the LORD, and do according to all that I have commanded thee.