The Collaborative International Dictionary of English v.0.48:

Mild \Mild\ (m[imac]ld), a. [Compar. Milder; superl.
   Mildest.] [AS. milde; akin to OS. mildi, D. & G. mild, OHG.
   milti, Icel. mildr, Sw. & Dan. mild, Goth. milds; cf. Lith.
   melas dear, Gr. ? gladdening gifts.]
   Gentle; pleasant; kind; soft; bland; clement; hence, moderate
   in degree or quality; -- the opposite of harsh, severe,
   irritating, violent, disagreeable, etc.; -- applied to
   persons and things; as, a mild disposition; a mild eye; a
   mild air; a mild medicine; a mild insanity.
   [1913 Webster]

         The rosy morn resigns her light
         And milder glory to the noon.            --Waller.
   [1913 Webster]

         Adore him as a mild and merciful Being.  --Rogers.
   [1913 Webster]

   Mild steel, or Low steel, steel that has but little
      carbon in it and is not readily hardened.
      [1913 Webster]

   Syn: Soft; gentle; bland; calm; tranquil; soothing; pleasant;
        placid; meek; kind; tender; indulgent; clement;
        mollifying; lenitive; assuasive. See Gentle.
        [1913 Webster]