Meaning

2 senses
  1. The very beginning.

    I've been with the project since day one.

  2. (US, slang)A close, longtime friend, one who has been around since the beginning.

Examples

52 sentences
  1. Walking to work every day is one way to stay fit.

    ruКаждый день ходить на работу пешком - один из способов оставаться в форме. — marafon

  2. The only website Tom visits at least once a day is this one.

    ruЭто единственный сайт, который Том посещает не реже раза в день. — Biga

  3. Tom has been here since day one.

  4. The other day, I met one of my classmates on the street.

    deIch bin neulich auf der Straße einem Mitschüler begegnet. — Waldelfe

  5. The other day, I met one of my old classmates on the street.

Forms

plural: day ones
Singularday one
Pluralday ones

regular

See also

neighbours in the dictionary
day one — meaning, examples, forms, synonyms | Krumeto