|Noun||1.||FL - a state in southeastern United States between the Atlantic and the Gulf of Mexico; one of the Confederate states during the American Civil War|
|(language)||FL - Function Level.|
John Backus's successor to FP, developed ca. 1985. FL is dynamically typed and adds higher-order functions, exceptions, user-defined types and other features.
["FL Language Manual, Parts 1 & 2", J. Backus et al, IBM Research Report RJ 7100 (1989)].