noun: (linguistics, computing theory) Initialism of context-free grammar. [(computing theory) A formal grammar in which every production rule is such that the left-hand side is exactly one non-terminal symbol and the right-hand side is zero or more terminal symbols and/or nonterminal symbols.]
noun: (computer science) Initialism of control-flow graph.
noun: Alternative letter-case form of CFG [(computing) A configuration file.]