5.1 Definitions

In addition to definitions defined in 8. Definitions Used in the Rules, the following definitions apply to black ball:
Free shot
After a foul has been committed the incoming player is awarded a free shot. On a free shot Rule 6.2 Wrong Ball First is suspended and the player may take the cue ball in position or in hand in baulk.
Baulk
Baulk is the rectangular area of the table that is bordered by the baulk line and the three cushions at the head of the table. The baulk line is parallel to the head rail and one fifth of the length of the playing surface away from the head cushion. For the applicable general rules, “behind the head string” should be read as “in baulk.”
Snookered
A player is said to be snookered when the cue ball has no straight, direct path to hit at least part of a legal target ball. The snooker must be declared by the referee for it to be in effect.
Ball On
An object ball is said to be “on” when it is a legal target for the shooter.