Definition of one moment in English:

one moment

(also just a moment)

phrase

  • A request for someone to wait for a short period of time, especially to allow the speaker to do or say something.

    • ‘Excuse me one moment but am I right in thinking that there are at least two unemployed people in the UK?’
    wait, wait a minute, just a moment, just a second, stay here, stay put, remain here