Pronunciation Interjection
  1. Said when hesitating in speech.

er (ers, present participle erring; past and past participle erred)

  1. (informal) To utter the word "er" when hesitating in speech, found in the phrase um and er.
    He ummed and erred his way through the presentation.

Proper noun
  1. Queen Elizabeth
  2. (sports) Abbreviation of Erie#English|Erie. Erie, Pennsylvania
  • (Elizabeth Regina) EIIR (Elizabeth II)


  1. (baseball) The statistic earned run a run that was scored without the aid of an error by the fielding team that is charged to the pitcher responsible for allowing the runner that scored to reach base.
  2. (biology) Initialism of endoplasmic reticulum
  3. (computing) Initialism of entity-relationship
  4. (medicine) Initialism of emergency room
  5. (physics) Initialism of Einstein-Rosen bridge#English|Einstein-Rosen bridge.
Related terms
  • (Einstein Rosen) EPR Einstein Podolsky Rosen

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