A1 a period of seven days, especially either from Monday to Sunday or from Sunday to Saturday: last/this/next week We go to the cinema about once a week. Will you be going to next week's class? It usually takes about four weeks to get the forms processed. Don't do anything strenuous for a week or two. It'll be weeks (= several weeks) before the flood damage is cleared up.Specific periods of time A1 the five days from Monday to Friday, the usual working period for many people: We're usually too tired to do much socializing during the week.Days, and parts of the week › one week after the day mentioned: The first performance of the play is a week today/tomorrow. Our holiday starts a week on Saturday. She has to go back to see the doctor Friday week.In the future and soon › one week before the day mentioned: The problems with the TV started a week last Monday. It was his birthday a week ago this Friday.In the past › the amount of hours spent working during a week or the number of days on which a person works: A lot of farm labourers work a six-day week.Working hours and periods of workWork, working and the workplace week by week › each week during a period of time: We could see his health deteriorate week by week.Continually and repeatedly week after week (also week in, week out) › regularly or continuously for many weeks: I go to aerobics three times a week, week in, week out.Continually and repeatedly