angle iron

angle iron (plural angle irons)

1. A length of iron or steel, having an L-shaped cross section, used as a structural support
   • 1938, Xavier Herbert, Capricornia, Chapter VII, p. 92,

     The homestead […] was of corrugated iron on an angle-iron frame.

Although the sense of angle iron in reference to steel angle stock is a misnomer (comparable to tin foil in reference to aluminum foil), it is well known and still sometimes heard.

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