Of the cervix during pregnancy, to thin and stretch in preparation for labor.
To make oneself inobtrusive as if due to modesty or diffidence.
To cause to disappear as if by rubbing out or striking out.
To erase (as anything impressed or inscribed upon a surface); to render illegible or indiscernible.
To check or prove the validity of; verify.
To have its validity successfully proven.
To render valid.