Definition
A situation that is tough, aggressive, lawless, and wild.
Origins
First used to refer to the towns at the end of the Union Pacific Railroad when under construction.
See Also
- on wheels
How People Actually Use It
Used to describe someone or something (maybe a pet) that is tough, aggressive and hard to handle.
"My 17 year old daughter is hell on wheels - she comes and goes without permission."
Source: Urban Dictionary