Definition of ER in English:

ER

  • 1North American Emergency room.

  • 2Queen Elizabeth.

Definition of Er in English:

Er

  • The chemical element erbium.

Definition of er in English:

er

exclamation

  • Expressing hesitation.

    ‘“Would you like some tea?” “Er … yes … thank you.”’
    • ‘So we were gulping down our pasta and I said: "Er, er, things could be…"’
    • ‘Er, your shoulder? said Arthur in a horrified whisper’

Origin

Natural utterance: first recorded in English in the mid 19th century.