the whole week; an entire week (emphasizing the full seven-day period)
彼は丸一週間休暇を取って海外旅行に行った。
He took a whole week off and went on a trip abroad.
入院して丸一週間ベッドで安静にしていた。
I was confined to bed in the hospital for a full week.
その工事のために丸一週間通行止めになる予定だ。
Due to that construction, the road will be closed for an entire week.