Adumbration

Noun

1. The state of being in shadow or shade; a shadow.
2. A faint sketch; a brief representation, an outline. The supposed practice of displaying only outline of a charge (“image displayed on an escutcheon”), sometimes filled in with a darker shade than the field.
3. The supposed practice of displaying only outline of a charge (“image displayed on an escutcheon”), sometimes filled in with a darker shade than the field.
4. A rough or symbolic representation; a vague indication of what is to come, a foreshadowing.
5. The form of an object as seen by an observer.