ADUMBRATION
n. 1. The act of making a shadow or faint resemblance. 2. A faint sketch; an imperfect representation of a thing. 3. In heraldry, the shadow only of a figure, outlined, and painted of a color darker than the field.
Ad `um *bra "tion, n. Etym: [L. adumbratio.]
adumbration
ad um bra tion /æ̀dʌmbréɪʃ (ə )n /名詞 U C ぼんやりとした輪郭 ; 予兆 ; 陰を作ること .