Definition of Guam
island in the southern Marianas; unincorporated U.S. territory containing extensive U.S. military facilities; capital Hagåtña area 209 square miles (541 square kilometers), population 159,358
Guamanianplay \gwä-ˈmā-nē-ən\ adj or noun
GUAM Defined for English Language Learners
Definition of Guam for English Language Learners
: U.S. island in the Pacific Ocean
Seen and Heard
What made you want to look up Guam? Please tell us where you read or heard it (including the quote, if possible).