Definition
Most golf courses have a cart path, which is where carts drive. While playing, golfers get free relief if their ball lands on the cart path. You may also hear the phrase, "cart path only", which means the golf course is likely wet from rain and the superintendent requires all golfers to drive their carts on the path only to avoid damaging the wet grass permanently.
Usage
Today, the course is cart path only due to recent rainy conditions.