- An Australian plant of the genus Xanthorrhoea, having a thick trunk crowned with a dense tuft of pendulous, grasslike leaves, from the center of which arises a long stem, bearing at its summit a dense flower spike looking somewhat like a large cat-tail. These plants are often called "blackboys" from the large trunks denuded and blackened by fire. They yield two kinds of fragrant resin, called Botany-bay gum, and Gum Acaroides.
- A similar Australian plant (Kingia australis).
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). grass tree. Retrieved September 21, 2026, from http://smartdefine.org/grass_tree/definitions/2013484 |
| Chicago | Webster's. 2011. "grass tree" http://smartdefine.org/grass_tree/definitions/2013484 (accessed September 21, 2026). |
| Harvard | Webster's 2011, grass tree, Smart Define, viewed 21 September, 2026, <http://smartdefine.org/grass_tree/definitions/2013484>. |
| MLA | Webster's. "grass tree" 27 May 2011. Web. 21 September 2026. <http://smartdefine.org/grass_tree/definitions/2013484> |