Iron __, Political Boundary Once Dividing Europe

This page is the CodyCross answer for the clue below from Earth, Group 19, Puzzle 3.

Question is: Iron __, Political Boundary Once Dividing Europe

and the answer is: CURTAIN

Word Meaning:

CURTAIN — A piece of cloth covering a window, bed, etc. to offer privacy and keep out light.

Definitions from Wiktionary.

Iron __, political boundary once dividing Europe — CodyCross Answer | CodyCross Solutions