Definitions of Tree:

• noun:   English actor and theatrical producer noted for his lavish productions of Shakespeare (1853-1917)
• noun:   a tall perennial woody plant having a main trunk and branches forming a distinct elevated crown; includes both gymnosperms and angiosperms
• noun:   a figure that branches from a single root

  Example: "Genealogical tree"

• verb:   chase a bear up a tree with dogs and kill it