Original: The American Recovery and Reinvestment Act of 2009, abbreviated ARRA and commonly referred to as the Stimulus or The Recovery Act, is an economic stimulus package enacted by the 111th United States Congress in February 2009.
Simplified: The American Recovery and Reinvestment Act of 2009, most commonly referred to as the stimulus bill or stimulus package, was a spending bill passed by the U.S. Congress in 2009.