A Cushitic language of Ethiopia.

(of a plant) Having the characteristics of a tree. / Covered or filled with trees. / (obsolete) Growing on trees. / (obsolete, anatomy) Having a tree-like, branching structure.

In an arboreal manner / With regard to trees

Formed by trees; filled or covered with trees.

(obsolete) Relating to trees; arboreal.

Furnished with an arbor; lined with trees.

The quality of being arboreal, of living in trees

Spanish arbor vine, a species of bindweed (Convolvulaceae), Merremia tuberosa.

(US) The national day of observance of the need to protect trees, celebrated by planting a tree.

Any of the evergreen trees and shrubs known as arborvitae, of the genera Thuja and Thujopsis, or of the species Platycladus orientalis. / (anatomy) White matter of the cerebellum.