also: しゃどう
noun
Loanword from English 'shadow', used in contexts like makeup, photography, or as a stylistic term. Not the everyday word for a cast shadow (that is 影).
アイシャドーをまぶたにのせる。
Apply eye shadow to the eyelid.
写真のシャドー部分を明るく補正する。
Brighten the shadow areas of the photo.