Definitions
1.NounA kind of tree, the arborvitae; an individual thereof.
2.NounA metaphor used to describe the phylogenetic relationships between organisms, both living and extinct; a diagram that shows those relationships, with a treelike appearance.
3.NounA term used in the Hebrew Bible that is a component of the world tree motif.
4.NounThe central mystical symbol used in the Kabbalah of esoteric Judaism, also known as the ten sephiroth.