Steely /(-y̆)/

Steel·y

Steely

a.
  1. Made of steel; consisting of steel.
    Around his shop the steely sparkles flew.
  2. Resembling steel; hard; firm; having the color of steel.
    She would unarm her noble heart of that steely resistance against the sweet blows of love.

Phrases & Compounds
Steely iron
a compound of iron containing less than one half of one per cent of carbon.