kobalt

Noun

cobalt (usually uncountable, plural cobalts)

1. (usually) A chemical element (symbol Co) with an atomic number of 27: a hard, lustrous, silver-gray metal.
2. (usually) Cobalt blue.
   • And although we’ve certainly seen a variety of blue shades — from periwinkle to cobalt and even Dean Cain’s indigo-washed costume from the 1990’s TV show “Lois & Clark” — Superman’s uniform is still instantly recognizable across generations. In fact, there is only one film — Zack Snyder’s 2013 “Man...2025 February 21, Leah Dolan, “How the Superman ‘S’ became fashion’s favorite logo”, in CNN

See all 6 meanings of cobalt