Christmas tree
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
Something which resembles a Christmas tree (sense 1) in appearance (for example, in having coloured lights) or shape. — A panel of indicator lights in an aircraft or a submarine.
Nghĩa · Tiếng Việt
Điều gì đó giống cây thông Noel về hình dạng hoặc ngoại hình
Machine-translated — suggest a fix
Register: slang
Where it’s used:
Used
American English
Examples
Farnsworth and Reed […] have reported on comparative reaction times to "Christmas tree" signal lights with respect to color deficiency. One of the most important color discriminations involved in the operation of a submarine is that of reading the "Christmas tree," a panel of 30 to 60 small jewel-sh
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “Christmas tree” mean?
Something which resembles a Christmas tree (sense 1) in appearance (for example, in having coloured lights) or shape. — A panel of indicator lights in an aircraft or a submarine.
Is “Christmas tree” formal or informal?
Christmas tree is generally slang.