Interesting Word - Jaywalking

The term "jaywalking", which means crossing the road or walking along the street without regard for approaching traffic, came from the US slang "jay", a term popular in the early 20th Century which means a rustic newcomer unfamiliar with city ways.

(It is not actually illegal to jaywalk in the UK, but if you do you are violating the Highway Code and you are liable for any resulting accident.)