Definition of runner noun from the Oxford Advanced Learner's Dictionary

      

    runner

     noun
    noun
    BrE BrE//ˈrʌnə(r)//
     
    ; NAmE NAmE//ˈrʌnər//
     
    Criminals, Athletics
     
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  1. 1  a person or an animal that runs, especially one taking part in a race a long-distance/cross-country/marathon, etc. runner a list of runners (= horses in a race) and riders see also forerunner, front runner, roadrunner See related entries: Athletics
  2. 2(especially in compounds) a person who takes goods illegally into or out of a place a drug runner see also gunrunner See related entries: Criminals
  3. 3a strip of metal, plastic or wood that something slides on or can move along on the runners of a sledge
  4. 4 a plant stem that grows along the ground and puts down roots to form a new plant
  5. 5a long narrow piece of cloth or carpet on a piece of furniture or on the floor
  6. 6 a person in a company or an organization whose job is to take messages, documents, etc. from one place to another
  7. 7 (Canadian English) a shoe that is used for running or doing other sport in
  8. Extra examples He is currently the front runner for the Democratic Party presidential nomination. one of the fancied runners in today’s race He’s also a keen marathon runner. Here is the list of runners and riders for the first race. She was a good runner and soon caught up with Tom. Some of the country’s top long-distance runners are competing in this 10km race. There are several promising young 1500-metre runners coming through. a marathon/​long-distance/1500-metre runnerIdioms (British English, informal) to leave or run away from somewhere in a hurry, especially to avoid paying a bill or receiving a punishment
See the Oxford Advanced American Dictionary entry: runner