Etymology

Noun

1. A set amount of travelling, seen as a single unit; a discrete trip, a voyage.
2. A day.
3. A day's travelling; the distance travelled in a day.
4. A day's work.
   • 1485, Sir Thomas Malory, Le Morte Darthur, Book VI:

     But whan ye have done that journey, ye shall promyse me, as ye ar a trew knyght, for to go and helpe me and other damesels that ar dystressed dayly with a false knyght.