Ăd'um-brā'tion, n.

n. [Lat. adumbratio.]

1. The act of adumbrating, or making a shadow or faint resemblance.
2. A faint sketch; an imperfect portrayal or representation of a thing. “Elegant adumbrations of sacred truth.” Bp. Horsley.
3. (Her.) The shadow only of a figure, outlined, and painted of a color darker than the field.