week

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. A period of seven days: a week of rain.
2. n. A seven-day calendar period, especially one starting with Sunday and continuing through Saturday: this week.
3. n. A week designated by an event or holiday occurring within it: commencement week.
4. n. A week dedicated to a particular cause or institution: Home Safety Week.
5. n. The part of a calendar week devoted to work, school, or business: working a three-day week.
6. n. One week from a specified day: I'll see you Friday week.
7. n. One week ago from a specified day: It was Friday week that we last met.

Century Dictionary and Cyclopedia

1. n. A period of seven days, of which the days are numbered or named in like succession in every period—in English, Sunday (or first day. etc.), Monday, Tuesday, Wednesday, Thursday, Friday, Saturday (or seventh day); hence, a period of seven days. The week is not dependent upon any other period, as a subdivision of that period, but cuts across the division-lines of month and year alike with its never-ending repetition. In general Jewish and Christian belief, it is founded on the creation of the world in six days (according to the account in Genesis), with a succeeding seventh day of rest, specially commemorated by the Jewish rest-day, or Sabbath, our Saturday. It has also been conjectured to represent a fourth of the lunar month of about 28 days; but no people is known as having made and maintained such a subdivision of the month. As a period and division of time, its use is limited to Jews and Christians (including also in some measure the Mohammedans, by derivation from these); but the week-day names and their succession are found more widely, and are of a wholly different origin; they rest upon an astrological principle, which assigns each day in succession to one of the planets as regent; and they further involve a division of the day into 24 hours. If the planets are arranged in the order of their distance from us as held by the ancients—namely, Saturn, Jupiter, Mars, Sun, Venus, Mercury, Moon,—then, if the first hour of a clay is allotted to Saturn, and each following hour to the next planet, the 25th hour, or the first of the next day, will fall to the Sun, the 49th, or the first of the following day, to the Moon, and so to Mare, Mercury, Jupiter, Venus, in succession; and, each planet being reckoned as regent of the whole day of whose first hour it is regent, the days are Sun's day, Moon's day, Mars' day, and so on to Saturn's day, where the same succession is taken up anew. These names were unknown to, or at least never used by, the Jews, nor do they appear in classical Greek, nor do the Mohammedans employ them; but they passed from Roman use to European, and not only in their Latin forms, but also as translated into Germanic languages, the names of Germanic divinities being, by a rude identification, substituted in them for those of the Roman, as Mars, etc., without any regard to the planets (see the names Tuesday, etc.); and they are found also in India, which doubtless received them, with the rest of its astronomy and astrology, from Greece and Rome. The Indian days are coincident with our days of the same name—that is, it is Sun's day there when it is our Sunday, and so on. But there is no other than an astrological significance belonging to the names there; a week as a division of time is wholly unknown to both ancient and modern India. In law, week is sometimes construed to mean any period of seven full days, and sometimes to mean such a period beginning with the beginning of a Sunday. Thus, a requirement of “a week's notice” may be satisfied by the lapse of any seven consecutive days, but a publication of a notice “once in each week for three weeks before the sale” is held to contemplate three weeks reckoned as from Sunday to Sunday, not merely 21 days before the sale. Abbreviated w., wk.
2. n. The six working-days of the week; the week minus Sunday: as, to be paid so much a week.
3. n. An obsolete form of wick.
4. n. A corner; an angle: as, the weeks of the mouth or the eye.

Wiktionary

1. n. Any period of seven consecutive days.
2. n. A period of seven days beginning with Sunday or Monday.
3. n. A subdivision of the month into longer periods of work days punctuated by shorter weekend periods of days for markets, rest, or religious observation such as a sabbath.
4. n. Seven days after (sometimes before) a specified date.

GNU Webster's 1913

1. n. A period of seven days, usually that reckoned from one Sabbath or Sunday to the next.

WordNet 3.0

1. n. any period of seven consecutive days
2. n. hours or days of work in a calendar week
3. n. a period of seven consecutive days starting on Sunday