Sunday

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. The first day of the week.
2. n. The Sabbath for many Christians.
3. Sunday, William Ashley Known as "Billy.” 1862-1935. American evangelist. Originally a professional baseball player (1883-1891), he began preaching in 1896 and became a Presbyterian minister in 1903.

Century Dictionary and Cyclopedia

1. n. The first day of the week; the Christian Sabbath; the Lord's Day. See Sabbath. The name Sunday, or ‘day of the Sun,’ belongs to the first day of the week on astrological grounds, and has long been so used, from far beyond the Christian era, and far outside of Christian countries. (See week.) The ordinary name of the day in Christian Greek and Latin and in the Romanic languages is the Lord's Day (Greek κυριακή, Latin dominica, French dimanche, etc.), while the Germanic languages, including English, call it Sunday. In the calendar of the Roman Catholic and Anglican churches the Sundays of the year form two series—one reckoned from Christmas, and one from Easter. The first series consists of four Sundays in Advent, one or two Sundays after Christmas, and the Sundays after Epiphany, from one to six in number, according to the date of Septuagesima. The second series consists of the remaining Sundays of the year—namely, Septuagesima, Sexagesima, Quinquagesima, six Sundays in Lent, Easter Sunday, five Sundays after Easter, Sunday after Ascension, Pentecost or Whitsunday, and the Sundays after Pentecost (the first of which is Trinity Sunday), from twenty-three to twenty-eight in number, or the Sundays after Trinity (according to the usage of the Anglican Church), from twenty-two to twenty-seven in number, the last of these being always the Sunday next before Advent. On the Sundays after Pentecost or Trinity not provided with offices of their own are used the offices of the Sundays omitted after Epiphany. In the Greek Church the first Sunday of the ecclesiastical year is the Sunday of the Publican and Pharisee, which is that next before Septuagesima. Then follow the Sundays of the Prodigal Son, of Apocreos, of Tyrophagus, the six Sundays of Lent, Easter, (called Pascha or Bright Sunday), the five Sundays after Easter (called of St. Thomas or Antipascha, of the Ointment-bearers, of the Paralytic, of the Samaritan Woman or Mid-Pentecost, of the Blind Man), the Sunday after Ascension (called of the Three Hundred and Eighteen Fathers of Nicæa), Pentecost, and All Saints' Sunday, answering to Trinity Sunday. The Sundays after Pentecost are numbered continuously till the Sunday of the Publican and Pharisee is again reached. They are mostly named after the evangelist from whom the gospel for the day is taken. They are called Sundays of St. Matthew from Pentecost till the Exaltation of the Cross (September 14th), when two Sundays are called Sunday before and after the Exaltation respectively. After this follow the Sundays of St. Luke. The Sundays corresponding to the third and fourth in Advent are the Sunday of the Holy Forefathers and the Sunday before Christmas, and the Sundays next preceding and succeeding the Epiphany are called Sunday before and after the Lights. Some Sundays of St. Matthew, if omitted before the Exaltation, are transferred to the time after the Epiphany. The seventeenth or last Sunday of St. Matthew is called the Sunday of the Canaanitish Woman.
2. Occurring upon, or belonging or pertaining to, the Lord's Day, or Christian Sabbath.

Wiktionary

1. n. The seventh day of the week in systems using the ISO 8601 standard, or the first day of the week in many religious traditions. The Sabbath for most Christians; it follows Saturday and precedes Monday.
2. adv. on Sunday
3. n. The seventh day of the week in systems using the ISO 8601 standard, or the first day of the week in many religious traditions. The Sabbath for most Christians; it follows Saturday and precedes Monday.
4. adv. on Sunday

GNU Webster's 1913

1. n. The first day of the week, -- consecrated among Christians to rest from secular employments, and to religious worship; the Christian Sabbath; the Lord's Day.
2. adj. Belonging to the Christian Sabbath.

WordNet 3.0

1. n. first day of the week; observed as a day of rest and worship by most Christians
2. n. United States evangelist (1862-1935)