one under
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
A person under a train; a person hit by a train after jumping or falling in front of it.
Register: slang
Examples
2002, "Tube Troll", ">Incident @ Hangar lane tube <", uk.transport.london http://groups.google.com/group/uk.transport.london/browse_thread/thread/9a749f81e7f414b9/04825cc24c006db5?lnk=st&q=%22one+under%22+train&rnum=3#
The twist in this tale is that the driver (who was at the back and hadn't seen an
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 “one under” mean?
A person under a train; a person hit by a train after jumping or falling in front of it.
Is “one under” formal or informal?
one under is generally slang.