Which Winter Olympic sport uses a curling stone?

Curling is the Winter Olympic sport that uses a curling stone.

In a curling match, players slide polished granite stones across a prepared sheet of ice toward a circular target called the house. The stone closest to the house's centre, or button, can score points after both teams have delivered all their stones in an end. Players sweep in front of a moving stone to influence its speed and path, making the sport a blend of precision, strategy and teamwork.

Modern curling stones are also called rocks. Their curved bottoms and carefully prepared ice allow a released stone to travel while gradually bending, or curling, in one direction. The playing surface is lightly sprayed with water droplets that freeze into a textured layer known as pebble, reducing friction and helping the stone glide.

Curling has deep Scottish roots, with written evidence of games dating to the sixteenth century. It appeared at the 1924 Winter Games, was later treated as a demonstration sport, and became a permanent medal sport in 1998. It is unrelated to skeleton, bobsleigh or ice hockey, despite sharing the Winter Olympic setting.