|an oral contraceptive that is effective if taken some hours after intercourse|
|a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes.|
|a chattering or flighty, light-headed person.|
morning-after pill morn·ing-af·ter pill (môr'nĭng-āf'tər)
A pill containing a drug, especially an estrogen or estrogen substitute such as diethylstilbestrol, that prevents implantation of a fertilized ovum and is therefore effective as a contraceptive after sexual intercourse.