The Game » Glossary

Here you can find a glossary of bowlingterms sorted by alphabet. You can choose a letter of the alphabet by clicking on one of the letters in the menu below. He and his should be read as 'he and his or she and her' throughout this glossary.

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r

• Radius of gyration (RG)
  An account/measurement of the distribution of the mass in an object from the geometric center.

• Release point
  Point in the delivery at which the ball leaves the hand.

• Reverse block
  A lane condition in which the inside portion of the lane is covered with less conditioner than the outside.

• Reverse pitch
  The drilled hole, either finger or thumb, is angled away from the midline (center) of the grip.

• Revolutions
  The number of times the bowling ball makes a complete rotation about its axis during its path down the lane.

• Rock
  Term for a bowlingball. Also known as 'apple'.

• Roll out
  See dead ball.

• Runway
  See approach.