- genitourinary, gu - of or related to the genital and urinary organs or their functions; "genitourinary infections"
- Guam, GU - the largest and southernmost island in the Marianas which is administered as a territory of the United States; it was ceded by Spain to the United States in 1898
--1 is a kind of island
--1 is a part of Mariana Islands, Marianas, Ladrone Islands