Definition of Christmas tree
plural Christmas trees
1
: a usually evergreen tree decorated at Christmas
2
: an oil-well control device consisting of an assembly of fittings placed at the top of the well
3
drag racing
: a set of paired colored lights arranged in two columns on a vertical pole in front of the starting line and used for starting a race
- Lights on top of the Christmas tree tell the drivers to enter the staging area. Larger yellow lights mean, "get ready." The green light means "go!"
- —Lori Polydoros
