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A spare is a term used in 
A "spare" is awarded when no pins are left standing after the second ball of a frame; i.e., a player uses both balls of a frame to clear all ten pins. A player achieving a spare is awarded ten points, plus a bonus of whatever is scored with the next ball (only the first ball is counted). It is typically rendered as a slash on score sheets in place of the second pin count for a frame.
:Example:
::Frame 1, ball 1: 7 pins
::Frame 1, ball 2: 3 pins (spare)
::Frame 2, ball 1: 4 pins
::Frame 2, ball 2: 2 pins
::The total score from these throws is: 7 + 3 + 4(bonus) + 4 + 2 = 20, while the score for Frame 1 is 14.
A player who bowls a spare in the tenth (final) frame is awarded one extra ball to allow for the bonus points.
Correctly calculating bonus points can be difficult and time-consuming, especially when combinations of strikes and spares come in consecutive frames. In modern times, however, this has been overcome with automated scoring systems (also known as score keepers), linked to the machines that set and clear the pins between frames. A computer automatically counts pins that remain standing, and fills in a virtual score sheet (usually displayed on monitors above each lane). However, even the automated system is not fool-proof, as the computer can miscount the number of pins that remain standing.
The term "hard spare" refers when no pins are knocked down on the first ball, due to a foot foul or a ball thrown into the gutter, and then a spare is converted with all ten pins remaining with the second ball. This is sometimes mocked as throwing a strike one ball too late.
Since throwing three strikes in a row is referred to as a "turkey," three spares in a row is most commonly referred to as a “sparrow."
bowling
Bowling is a Throwing sports#Target sports, target sport and recreational activity in which a player rolls a bowling ball, ball toward Bowling pin, pins (in pin bowling) or another target (in target bowling). Most references to ''bowling'' are ...
to indicate that all of the pins have been knocked down during the second ball
A ball is a round object (usually spherical, but sometimes ovoid) with several uses. It is used in ball games, where the play of the game follows the state of the ball as it is hit, kicked or thrown by players. Balls can also be used for s ...
of a frame when not all the pins were knocked down in the first frame of that player's two turns. The symbol for a spare for most bowling sports is a forward slash mark (/), while the unique vertically-oriented scoring system for candlepin bowling is somewhat different.
A "spare" is awarded when no pins are left standing after the second ball of a frame; i.e., a player uses both balls of a frame to clear all ten pins. A player achieving a spare is awarded ten points, plus a bonus of whatever is scored with the next ball (only the first ball is counted). It is typically rendered as a slash on score sheets in place of the second pin count for a frame.
:Example:
::Frame 1, ball 1: 7 pins
::Frame 1, ball 2: 3 pins (spare)
::Frame 2, ball 1: 4 pins
::Frame 2, ball 2: 2 pins
::The total score from these throws is: 7 + 3 + 4(bonus) + 4 + 2 = 20, while the score for Frame 1 is 14.
A player who bowls a spare in the tenth (final) frame is awarded one extra ball to allow for the bonus points.
Correctly calculating bonus points can be difficult and time-consuming, especially when combinations of strikes and spares come in consecutive frames. In modern times, however, this has been overcome with automated scoring systems (also known as score keepers), linked to the machines that set and clear the pins between frames. A computer automatically counts pins that remain standing, and fills in a virtual score sheet (usually displayed on monitors above each lane). However, even the automated system is not fool-proof, as the computer can miscount the number of pins that remain standing.
The term "hard spare" refers when no pins are knocked down on the first ball, due to a foot foul or a ball thrown into the gutter, and then a spare is converted with all ten pins remaining with the second ball. This is sometimes mocked as throwing a strike one ball too late.
Since throwing three strikes in a row is referred to as a "turkey," three spares in a row is most commonly referred to as a “sparrow."
References
{{Ten pin bowling Ten-pin bowling