A mulligan is an unofficial do-over in a casual round. Nobody knows for sure who the original Mulligan was, but the leading story points to a Montreal golf club in the 1920s.

Golfers yell "fore" to warn anyone who might be hit by a ball. The word is Scottish, short for "before," and likely tied to forecaddies or military usage.

A hole-in-one, or ace, is holing your tee shot. Where the term ace comes from, the first recorded hole-in-one in championship golf, and the traditions that come with one.

A bogey is one stroke over par. The word comes from a British music hall song about the Bogey Man, and it originally meant the target score, not one over it.

An albatross, or double eagle, is three under par on a hole. It's rarer than a hole-in-one, and the name is a British addition to golf's bird family.

An eagle is two strokes under par on a hole. The name followed the birdie: if one under was a bird, two under needed a bigger bird.

A birdie is one stroke under par on a hole. The name comes from Atlantic City in the late 1890s, when "bird" was American slang for something excellent.

Par is the number of strokes a skilled golfer is expected to need on a hole. The word came from the stock exchange, and golf borrowed it in 1870.