DFL
DFL is used in optics to denote a distributed feedback laser, in computing for default program settings, and in various governmental or military contexts such as data field lines or destroyer flotilla leaders.
Medical
Miscellaneous
Dogs For Life
Daviot Farms Limited
Dominicans For Life
Deutsche Fussball Liga
Dead Freaking Last
Dead F***ing Last
Doug Fir Lumber
Dumb Friggin Liberal
Dead Fn Last
Da Finest Legs
Do not Follow or Lead
Destroyer Flotilla Leader
Community
Governmental
Democratic Free Liberal
Democratic Farmer Laborer
Data Field Line
Damned Fool Liberal
Democratic Farm Labor
Dead Frustrating Last