Definition of single adjective from the Oxford Advanced Learner's Dictionary

      

    single

     adjective
    adjective
    BrE BrE//ˈsɪŋɡl//
     
    ; NAmE NAmE//ˈsɪŋɡl//
     
    Train and bus travel
     
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    one
  1. 1  [only before noun] only one He sent her a single red rose. a single-sex school (= for boys only or for girls only) All these jobs can now be done by one single machine. I couldn't understand a single word she said! the European single currency, the euro (British English) a single honours degree (= for which you study only one subject)
  2. for emphasis
  3. 2  [only before noun] used to emphasize that you are referring to one particular person or thing on its own Unemployment is the single most important factor in the growing crime rates. We eat rice every single day.
  4. not married
  5. 3  (of a person) not married or having a romantic relationship with somebody The apartments are ideal for single people living alone. Are you still single? see also single parent
  6. for one person
  7. 4  [only before noun] intended to be used by only one person a single bed/room a single sheet (= large enough for a single bed) compare double
  8. ticket
  9. 5[only before noun] (British English) (also one-way North American English, British English) a single ticket, etc. can be used for travelling to a place but not back again a single ticket How much is the single fare to Glasgow? compare return (7) See related entries: Train and bus travel
  10. Word Origin Middle English: via Old French from Latin singulus, related to simplus ‘simple’.Extra examples Marriage breakdown is common and there are a large number of single-parent families. Unemployment is the single most important factor in the rising crime rates. We eat rice every single day.Idioms immediately; with only a quick look He could tell at a glance what was wrong.
    (in) single file(old-fashioned (in) Indian file)
     
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    (in) one line, one behind the other They made their way in single file along the cliff path.
See the Oxford Advanced American Dictionary entry: single