(名詞) 見證樹 － 非常古老的樹，尤指曾經「見證」重要歷史事件的樹。
Many tourists come to the Laurel Hill Cemetery, and they loved the tree because it was one of those that touched history; it was alive when famous figures from the past were alive,“ said Civil War author and historian Andy Waskie…” Many battlefields, such as Gettysburg, have ‘witness trees,’ which survived the fighting and are honored.
—Edward Colimore, “Laurel Hill Cemetery’s legendary ‘witness tree’ is felled,” The Inquirer (Philadelphia), May 29, 2016
Today, only four trees survive from Washington’s time—he died at Mount Vernon in 1799….No one is more aware of the mortality of the witness trees near the mansion than Joel King, a Mount Vernon gardener who is on a mission to propagate them.
—Adrian Higgins, “This gardener is working to preserve George Washington’s last surviving trees,” The Washington Post, February 20, 2017