"CFL" is an abbreviation of Canadian Football League. It is also an abbreviation that refers to a compact fluorescent lamp or a compact fluorescent light. The popularity of such lamps has risen due to the lamps' energy-efficiency and despite their potential health hazards.
The Canadian Football League is the top level at which athletes can play Canadian football. This gridiron football game differs from American football in some ways but retains many similarities to the American game. Nine teams play in the CFL, as of 2014. The CFL has a large following in Canada, although not as large as the following that the National Hockey League has.