The golf term “birdie” — meaning one stroke under par on a hole — actually comes from early American slang.
Origin Story
In the early 1900s, the word “bird” was popular slang for something excellent or impressive, much like saying “cool” or “awesome” today.
According to golf lore, the term was first coined in Atlantic City, New Jersey, at the Atlantic City Country Club:
During a round, golfer Ab Smith hit a great approach shot and called it “a bird of a shot.”
After sinking the putt for one under par, the group agreed to call such a score a “birdie.”
Why It Stuck
The term caught on quickly in American golf circles and spread internationally.