WordWeb Online

1. The day between Saturday and Monday; usually regarded as the last day of the week (day 7), and the second day of the weekend; traditionally observed as a day of rest and worship by Christians
   - Lord's Day, Dominicus, Sun
    
2. United States evangelist (1862-1935)
   - Billy Sunday, William Ashley Sunday

Sounds like:

Derived forms: Sundays

Type of: day of rest, evangelist, gospeler [US], gospeller, rest day, revivalist

Part of: weekend

Encyclopedia: Sunday, Monday Or Always