A Christmas tree
is a tree used for decoration purposes at Christmas. Usually Christmas trees are decorated with decorations such as baubles and tinsel, with a star on the top of the tree.
In Snospis Eht: Christmas Special: Part 01, Marge talks about how "Mantra Claws sneaks in through the back passages of our homes, and finds our fig tree".
In A Christmas Carol, Scrooge and Mantra Claws climb up Snospis Hill to take a Christmas tree to Maggie.