consolidate

1. (ambitransitive) To combine into a single unit; to group together or join.Examples: "He consolidated his luggage into a single large bag."; "With large credits borrowed in the name of Charlottenhütte he managed to gain control over the Rhein-Elbe Union, another large steel firm which in 1926 consolidated with one of its subcompanies, the old and respected Gelsenkirchen Mining Company, and assumed the latter’s name."; "The second spot, “One Thing,” shows the unlikely custom car shop workin', musclebound dude-bro, who loves his iPhone because it consolidates the iPod, camera, cell phone and SMS device he used to carry around in “a little bag.”"ambitransitive

2. (finance) With respect to debt, to pay off several debts with a single loan.