Armco
/ˈɑːmkəʊ
/noun [mass noun] trademark
A very pure soft iron, used in particular for roadside crash barriers.It does have its difficulties, no run off areas, tight Armco, an interesting track surface with gutters and manhole covers, but with Monaco, they don't really bother you....
- Other safety advances include improvements to marshal posts, new gravel traps and Armco fencing around the circuit.
- There being no catch fencing or Armco to deflect him, he died from hitting a tree.
Origin
Early 20th century: acronym from American Rolling Mill Company.