Uninhibited activity.
"After weeks of stress, they decided to go on a shopping spree and buy every item in their sight without checking prices or budgets."
engage without restraint in an activity and indulge, as when shopping
"After getting paid, she decided to go on a spending spree at the mall to buy everything on her list."
To engage in a spree.
"After weeks of hard work, he decided to go on a shopping spree to buy clothes for his new job."
A particular river that flows through Lusatia (eastern Germany) and into Berlin, where it flows into the Havel.
"The Spreewald canals create a unique landscape distinct from the main river Spree that flows through Lusatia and joins the Havel in Berlin."