f548ddc8_First_Person_Shooter___GPWiki_pularized_by_the_FPS_community_Description
[Term] Lag / Latency [Type] noun [Description] 
networked FPS games require ALOT of bandwidth, in the event that messages are not being received from the host on time (or at all) the game will freeze up, this is called lag.
First Person Shooter - GPWiki
Description