| 1. | Also called Decoration Day. a day, May 30, set aside in most states of the U.S. for observances in memory of dead members of the armed forces of all wars: now officially observed on the last Monday in May. |
| 2. | any of several days, as April 26, May 10, or June 3, similarly observed in various Southern states. |
Me·mo·ri·al Day  (mə-môr'ē-əl, -mōr'-)  n. May 30, observed in the United States in commemoration of those members of the armed forces killed in war. It is officially observed on the last Monday in May. Also called Decoration Day. |