the Iron Curtain

: a silver-white malleable ductile magnetic heavy metallic element that readily rusts in moist air, occurs native in meteorites and combined in most igneous rocks, is the most used of metals, and is vital to biological processes — see Chemical Elements Table

: something made of iron: such as

: shackles for the hands or legs

: of, relating to, or made of iron

: resembling iron

: strong and healthy : robust

: to furnish or cover with iron

: to shackle with irons

: to smooth with or as if with a heated iron

: a hanging screen usually capable of being drawn back or up

: a device or agency that conceals or acts as a barrier — compare iron curtain

: the part of a bastioned front that connects two neighboring bastions

: to furnish with or as if with curtains

: to veil or shut off with or as if with a curtain