Charles Ellicott Commentary Jeremiah 48:4

"Moab is destroyed; her little ones have caused a cry to be heard." — Jeremiah 48:4 (ASV)

Her little ones. —The Hebrew adjective is the same as the Zoar, the little one, of Genesis 19:20, and that city may probably have been, as in Isaiah 15:5, in the prophet’s mind. In any case the “little ones” are cities, and not children.