A situation where the cue ball is directly in front of another ball in the line of the shot such that the player is hampered by it, having to bridge over it awkwardly. This term is most commonly used in the game of snooker.
http://en.wikipedia.org/wiki/Glossary_of_cue_s ports_terms
How do the professionals approach Shots Off The Cushion?
Why do they always seem to have a choice of pots available to them?
What is the best shot to play on a re-spotted black?
What is a Chinese Snooker?
The answers to these and many other questions are contained within, but remember; identifying the correct shot is comparatively easy, but executing the shots properly is wholly dependant on your 'cueing', 'touch', 'feel' and 'technical ability.'
http://www.fcsnooker.co.uk/advanced/intro_adva nced/intro_advanced.htm