Noun has 1 sense

• gu(n = noun.location) guam - 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;

Adjective has 1 sense

• gu(a = adj.pert) genitourinary - of or related to the genital and urinary organs or their functions; "genitourinary infections"