Webster's Revised Unabridged Dictionary · 1913

Adumbration

Adumbration ({not transcribed}) , noun

[Latin adumbratio.]

1.
The act of adumbrating, or shadowing forth.
2.
A faint sketch; an outline; an imperfect portrayal or representation of a thing.
Elegant adumbrations of sacred truth. — Bp. Horsley
3.
(Heraldry) The shadow or outlines of a figure.