1. [n]  a metal tincture used in heraldry to give a silvery appearance
2. [adj]  lustrous gray; covered with or tinged with the color of silver; "silvery hair"

ARGENT is a 6 letter word that starts with A.

1. \Ar"gent\, n. [F. argent, fr. L. argentum, silver; akin
   to Gr. 'a`rgyros silver, 'argo`s, 'argh`s, white, bright,
   Skr. rajata white, silver, raj to shine, Ir. arg white, milk,
   airgiod silver, money, and L. arguere to make clear. See
   {Argue}.]
   1. Silver, or money. [Archaic]
   2. (Fig. & Poet.) Whiteness; anything that is white.
            The polished argent of her breast.    --Tennyson.
   3. (Her.) The white color in coats of arms, intended to
      represent silver, or, figuratively, purity, innocence,
      beauty, or gentleness; -- represented in engraving by a
      plain white surface. --Weale.
   

2. \Ar"gent\, a.
   Made of silver; of a silvery color; white; shining.
         Yonder argent fields above.              --Pope.