The Word is:”week”

week

/wiːk/
noun
noun: week; plural noun: weeks

a period of seven days.

“the course lasts sixteen weeks”

  • the period of seven days generally reckoned from and to midnight on Saturday night.
    “she has an art class twice a week”
  • workdays as opposed to the weekend; the five days from Monday to Friday.
    “I work during the week, so I can only get to this shop on Saturdays”
  • the time spent working during a week.
    “she works a 48-hour week”
  • British informal
    used after the name of a day to indicate that something will happen seven days after that day.
    “the programme will be broadcast on Sunday week”
  • Source credit: Google