General
lsd
What does lsd mean?
Lake Shore Drive, the scenic lakefront expressway along Lake Michigan.
"Traffic on LSD is brutal this morning."
Origin
Initialism for Lake Shore Drive.
Frequently asked questions
What does LSD mean in Chicago?
It is shorthand for Lake Shore Drive, the scenic lakefront expressway running along Lake Michigan.
Why do Chicagoans call it LSD?
It is simply an initialism for Lake Shore Drive, used in everyday traffic and driving talk.
Is Chicago's LSD a drug reference?
No, in Chicago context it refers to Lake Shore Drive, not the drug; the shared initials are coincidental.
Study it as flashcards or scroll it in Vocabulary Flow — saved to your collection.
