Jam Serve – a hard and fast serve aimed at an opponent to force him or her to move

Killshot – an aggressive offensive shot, intended to hit the front wall at a point low enough to prevent any chance of a return

Line judge – the two officials on the sidelines in charge of ruling on the appeals made to the referee; if both line judges agree, they can overturn a referee’s call

Lob Serve – A serve that rebounds high along the sidewall and heads slowly into a rear corner, often used as a second serve
Long Serve – See “Fault”.