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A version of the London Underground roundel used on Transport for London trains.

Alternative forms[edit]


From Middle English roundel, rundel, rondel, from Old French rondel (something round and flat), a diminutive of rond (round). More at round.



roundel (plural roundels)

  1. Anything having a round form; a round figure; a circle.
    • 2012, Andrew Martin, Underground Overground: A passenger's history of the Tube, Profile Books, →ISBN, page 93:
      The Overground has been given a seat at the Underground table. It has the roundel, the Johnston typeface, and it is on the Tube map.
  2. (music) A roundelay or rondelay.
  3. A small circular shield, sometimes not more than a foot in diameter, used by soldiers in the fourteenth and fifteenth centuries.
  4. (heraldry) A circular spot; a charge in the form of a small coloured circle.
  5. (aviation) a circular insignia painted on an aircraft to identify its nationality or service.
    Synonym: cockade
  6. A bastion of a circular form.


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