| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |
| a gadget; dingus; thingumbob. |
| field day | |
| —n | |
| 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 |
| 5. | (Austral) |
| 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 | |
field day
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.