win a golf grand slam

verb phrase

1. In golf, to win all four major championships — usually the Masters, PGA Championship, U.S. Open, and The Open Championship — in the same calendar year. The usual phrase is “win the Grand Slam.”

   B2

   usually “win/complete/achieve the Grand Slam” (with “the”); “win a golf grand slam” is nonstandardsports

   • "He dreams of winning a golf Grand Slam."A2
   • "No golfer has won a golf grand slam in a single year in the modern era."B2
   • "She hopes to win a golf grand slam by taking all four major titles this season."C1
   • "Completing a calendar-year Grand Slam is one of the hardest feats in professional golf."C1

2. More loosely, to win all four major golf championships at least once during a player’s career; this is often called a “career Grand Slam.”

   B2

   often expressed as “complete a career Grand Slam”sports

   • "A career Grand Slam means winning each of the four majors at least once."B1
   • "She needs one more major title to complete a career Grand Slam."B2
   • "He completed the career grand slam when he won the PGA Championship."B2
   • "Only a small number of players have won all four majors over the course of their careers."B1