day one
The very beginningThe very beginning.
» Walking to work every day is one way to stay fit.
Каждый день ходить на работу пешком - один из способов оставаться в форме. — marafon
CK · Tatoeba · CC BY 2.0 FRMeaning
2 sensesThe very beginning.
I've been with the project since day one.
(US, slang)A close, longtime friend, one who has been around since the beginning.
Examples
52 sentencesWalking to work every day is one way to stay fit.
ruКаждый день ходить на работу пешком - один из способов оставаться в форме. — marafon
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
Tom has been here since day one.
The other day, I met one of my classmates on the street.
deIch bin neulich auf der Straße einem Mitschüler begegnet. — Waldelfe
The other day, I met one of my old classmates on the street.