Adjective
(linguistics) (Of a grammar) which generates sentences in stages, in such a way that at any intermediate stage, any piece of the sentence is enough to determine the corresponding piece at the next stage; that is, the stagewise transformation at a point does not depend on the rest of the sentence
(linguistics) (Of a formal language) which can be decided by a pushdown automaton or a context-free grammar (sense 1)
Source: en.wiktionary.orgThis is indeed one of the most important general traits of a modern society: cultural homogeneity, the capacity for context-free communication, the standardization of expression and comprehension. Ernest Gellner
A language L has an LR(0) grammar if and only if L is a deterministic context-free language with the prefix property. Source: Internet
Block structure was introduced into computer programming languages by the Algol project (1957–1960), which, as a consequence, also featured a context-free grammar to describe the resulting Algol syntax. Source: Internet
An extended context-free grammar (or regular right part grammar) is one in which the right-hand side of the production rules is allowed to be a regular expression over the grammar's terminals and nonterminals. Source: Internet
Conflicts As described in the introduction, LL(1) parsers recognize languages that have LL(1) grammars, which are a special case of context-free grammars (CFGs); LL(1) parsers cannot recognize all context-free languages. Source: Internet
Extensions An obvious way to extend the context-free grammar formalism is to allow nonterminals to have arguments, the values of which are passed along within the rules. Source: Internet