[yeer] 
| 1. | a period of 365 or 366 days, in the Gregorian calendar, divided into 12 calendar months, now reckoned as beginning Jan. 1 and ending Dec. 31 (calendar year or civil year). Compare common year, leap year. |
| 2. | a period of approximately the same length in other calendars. |
| 3. | a space of 12 calendar months calculated from any point: This should have been finished a year ago. |
| 4. | Astronomy.
|
| 5. | the time in which any planet completes a revolution round the sun: the Martian year. |
| 6. | a full round of the seasons. |
| 7. | a period out of every 12 months, devoted to a certain pursuit, activity, or the like: the academic year. |
| 8. | years,
|
| 9. | a group of students entering school or college, graduating, or expecting to graduate in the same year; class. |
| 10. | a year and a day, a period specified as the limit of time in various legal matters, as in determining a right or a liability, to allow for a full year by any way of counting. |
| 11. | from the year one, for a very long time; as long as anyone remembers: He's been with the company from the year one. |
| 12. | year in and year out, regularly through the years; continually: Year in and year out they went to Florida for the winter. Also, year in, year out. |
rā season, part of a day, hour
year in, year out
Regularly, every year, as in We've been going to the Cape, year in, year out, ever since we were children. This expression was first recorded in 1830.