free-running

English

Adjective

free-running (comparative freer running, superlative freest running)

  1. (of a mechanism) Moving freely and smoothly.
    • 1941 May, “Notes and News: William Stroudley”, in Railway Magazine, page 234:
      As to any suggestion that Stroudley's engines were not free-running at high speed, this was of little moment with 60 m.p.h. laid down as the limit at that time.
    • 1961 November, Cecil J. Allen, “Locomotive Running Past and Present”, in Trains Illustrated, page 684:
      It is the Bulleid Pacifics of the Southern Region, which all observers of locomotive performance know to be among the freest running engines in the country.

References

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