Definition of single noun from the Oxford Advanced American Dictionary

     

    single

     noun
    noun
    NAmE//ˈsɪŋɡl//
     
     
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    music
  1. 1 [countable] a piece of recorded music, usually popular music, that consists of one song; the CD that a single is recorded on The band releases its new single next week. compare album
  2. room
  3. 2 [countable] a room in a hotel, etc. for one person Singles are available from $100 per night. compare double
  4. money
  5. 3 [countable] a bill that is worth one dollar compare double
  6. unmarried people
  7. 4 singles [plural] people who are not married and do not have a romantic relationship with someone else They organize parties for singles. a singles bar/club
  8. in sports
  9. 5 singles [uncountable] (especially in tennis) a game when only one player plays against one other; a series of two or more of these games the women's singles champion the first round of the men's singles a singles match She's won three singles titles this year. compare double
  10. 6 [countable] (in baseball) a hit that only allows the player to run to first base
See the Oxford Advanced Learner's Dictionary entry: single