generally termed the "bridge"; what is known as the "rest," or "jigger," is a cross of wood fixed at right angles to a handle about the same length as the cue, in order to enable a player to strike a ball when it is too far away to allow him to use his hand as a bridge. Special rests, and cues of extra length, are made to meet exceptional positions of the balls.
In Hand.—A ball is said to be in hand when it is off the table, and the player has to play from the half-circle or D.
Breaking the Balls.—Whoever plays, being in hand, when the red ball is on the spot and the other ball also is in hand, is said to break the balls.
In Baulk.—A ball is said to be in baulk when it is between the baulk-line and the bottom cushion.
Break.—The series of scores terminating with the stroke in which the player fails to score is called a break.
Screw and Screw-back.—This is putting a rotatory motion on a ball, causing it to spin on a horizontal axis backwards. Screw is put on by striking the ball below the centre.
Following Stroke.—This is putting a rotatory motion on a ball, causing it to spin on a horizontal axis forwards instead of backwards. The stroke is made by striking the ball high up above the centre.
Side.—This is a rotatory motion put on a ball, making it spin on a perpendicular axis.
In each of the foregoing cases the ball is made to take, after striking another ball, or a cushion, a direction different from that which it would take did no such rotatory motion exist.
In order that the learner may the better understand the meaning of screw, screw-back, following stroke,