'Tree' in the Bible

And he put the king of Ai to death, hanging him on a tree till evening: and when the sun went down, Joshua gave them orders to take his body down from the tree, and put it in the public place of the town, covering it with a great mass of stones, which is there to this day.

And their limit was from Heleph, from the oak-tree in Zaanannim, and Adami-hannekeb and Jabneel, as far as Lakkum, ending at Jordan;

And Joshua put these words on record, writing them in the book of the law of God; and he took a great stone, and put it up there under the oak-tree which was in the holy place of the Lord.