United States n pl, sing United States  [fr. The United States of America] usu cap  the collective name of the several north American bodies politic joined together governmentally by and under a supreme constitution : a : one of these United States : (1) an independent State  < Kansas is a free State > (2) a state government as a component unit of a federal system b : the name of a sovereign analogous to other sovereigns in the family of nations c :  the national government as a component unit of a federal system : as  < there are many definitions of the term  ~  throughout federal law >