large tree; big tree; huge tree
旅人は大樹の下で休んだ。
The traveler rested under the mighty tree.
祖父は孫に「寄らば大樹の陰」と教えた。
Grandfather taught his grandson the proverb, "Seek shelter in the shade of a great tree."
その山には、千年を超える一本の大樹がそびえ立つ。
On that mountain, a single mighty tree, over a thousand years old, towers.