What does argent mean?
The definition of argent
Ar”gent, n.
Etym: [F. argent, fr. L. argentum, silver; akin to Gr. 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.

Ar”gent, a.
Made of silver; of a silvery color; white; shining. Yonder argent fields above. Pope.