| GU | hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum |
|---|---|
| GU | heartwood of a palo santo |
| GU | small genus of evergreen resinous trees or shrubs of warm and tropical America |
| GU | hard greenish-brown wood of the lignum vitae tree and other trees of the genus Guaiacum |
| GU | medicinal resin from the lignum vitae tree |
| GU | small evergreen tree of Caribbean and southern Central America to northern South America |
| GU | small evergreen tree of the southern United States and West Indies a source of lignum vitae wood |
| GU | heartwood of a palo santo |
| GU | a great waterfall on the border between Brazil and Paraguay |
| GU | a great waterfall on the border between Brazil and Paraguay |
| GU | the world's highest volcano |
| GU | the largest and southernmost island in the Marianas |