day (dā)
n.
1. The period of light between dawn and nightfall; the interval from sunrise to sunset.
2.
a. The 24-hour period during which the earth completes one rotation on its axis.
b. The period during which a celestial body makes a similar rotation.
3. Abbr. D One of the numbered 24-hour periods into which a week, month, or year is divided.
4. The portion of a 24-hour period that is devoted to work, school, or business: an eight-hour day; a sale that lasted for three days.
5. A 24-hour period or a portion of it that is reserved for a certain activity: a day of rest.
6.
a. A specific, characteristic period in one's lifetime: In Grandmother's day, skirts were long.
b. A period of opportunity or prominence: Every defendant is entitled to a day in court. That child will have her day.

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7. A period of time in history; an era: We studied the tactics used in Napoleon's day. The day of computer science is well upon us.
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8. days Period of life or activity: The sick cat's days will soon be over.




year (yɪər)

n.
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). Compare common year, leap year.
2. a period of the same length in other calendars.
3.
a. a space of 12 calendar months calculated from any point: We expect to finish in a year.
b. fiscal year.
4. Astron.
a. Also called lunar year. a division of time equal to 12 lunar months.
b. Also called solar year. a division of time equal to 365 days, 5 hours, 48 minutes, and 46 seconds, representing the interval between one vernal equinox and the next.
c. Also called sidereal year. a division of time equal to the solar year plus 20 minutes, the time it takes the earth to complete one revolution around the sun.
5. the time in which any planet completes a revolution around the sun.
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,
a. age: a person of her years.
b. old age: a man of years.
c. time; period: the years of hardship.
d. an unusually or markedly long time: We haven't spoken in years.