|1.||a day spent in some special outdoor activity, such as nature study or sport|
|2.||a day-long competition between amateur radio operators using battery or generator power, the aim being to make the most contacts with other operators around the world|
|3.||military a day devoted to manoeuvres or exercises, esp before an audience|
|4.||informal a day or time of exciting or successful activity: the children had a field day with their new toys|
|a. a day or series of days devoted to the demonstration of farm machinery in country centres|
|b. a combined open day and sale on a stud property|
A time of great pleasure, activity, or opportunity, as in The press had a field day with this sensational murder trial. This colloquial expression, dating from the 1700s, originally referred to a day set aside for military maneuvers and exercises, and later was extended to a similar day for sports and games. Since the early 1800s it has been used more loosely.