'U.S.A.' definitions:
Definition of 'U.S.A.'
(from WordNet)
noun
North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776 [syn: United States, United States of America, America, the States, US, U.S., USA, U.S.A.]