What is the meaning of Iron_cross?

A position on the rings where the gymnast holds the rings straight out on either side of the body.

an acrobatic maneuver where the skier remains upright, but the lower leg bends back at the knee 90 degrees, and the ankles twist 45 degrees, so that the back of the skis form a right-angle cross

A defensive strategy in which the two defencemen, a forward and the goaltender align themselves in a diamond shape so that imaginary lines drawn through the two defencemen and through the forward and goaltender form the shape of a cross.

A house plant, Oxalis tetraphylla.

Alternative letter-case form of Iron Cross (a cross pattée used as a German military decoration).

Source: wiktionary.org