dartboard

Round object measuring 13 in in diameter that is divided into areas ranging in value from one to 20 points; it is used as a target for dart throwing.

double ring

Ring that surrounds a zone where the segment points are doubled.

outer bull

Ring that surrounds a zone worth 25 points.

triple ring

Ring that surrounds a zone where the segment points are tripled.

bull’s-eye

Center ring that surrounds a zone worth 50 points (also called the double bull); it is set at about 5.5 ft above the floor.

segment score number

Number of points a dartboard segment is worth.