eye shadow

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A cosmetic available in various colors or tints and applied especially to the eyelids to enhance the eyes.

from the GNU version of the Collaborative International Dictionary of English.

• noun a cosmetic powder or cream of a dark tint, applied on the eyelids or just under the eyebrows to accentuate the eyes. Compare eyeliner.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun makeup that is put below the eye to give a darker complexion there.