United States

Short definition from Wiktionary

Proper noun

1. 1
   A country in North America, also including Hawaii in Oceania; in full, United States of America.
2. 2
   A country in North America, also including Hawaii in Oceania; in full, United States of America: The American federal government.
3. 3
   The collection of individual states of the United States of America.
4. 4
   A federal nation consisting of several states, whether actual, historical or hypothetical.