Date1  —n. 1 day of the month, esp. As a number. 2 particular, esp. Historical, day or year. 3 day, month, and year of writing etc., at the head of a document etc. 4 period to which a work of art etc. Belongs. 5 time when an event takes place. 6 colloq. A appointment, esp. Social with a person of the opposite sex. B us person to be met at this. —v. (-ting) 1 mark with a date. 2 a assign a date to (an object, event, etc.). B (foll. By to) assign to a particular time, period, etc. 3 (often foll. By from, back to, etc.) Have its origins at a particular time. 4 appear or expose as old-fashioned (design that does not date; that hat dates you). 5 us colloq. A make a date with. B go out together as sexual partners.  out of date (attrib. Out-of-date) old-fashioned, obsolete. To date until now. Up to date (attrib. Up-to-date) modern; fashionable; current. [french: related to *data]