To erase (as anything impressed or inscribed upon a surface); to render illegible or indiscernible. Example: Do not efface what I've written on the chalkboard.
To cause to disappear as if by rubbing out or striking out. Example: Some people like to efface their own memories with alcohol.
To make oneself inobtrusive as if due to modesty or diffidence. Example: Many people seem shy, but they really just efface for meekness.
Of the cervix during pregnancy, to thin and stretch in preparation for labor. Example: Some females efface 75% by the 39th week of pregnancy.
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