An island grammar is a grammar that only describes a small chunk of the underlying language. It is used in language parsing in situations where there is no requirement for checking the entire syntax of a provided text. Island grammars can be extended with the use of a bridge grammar.
An island grammar is a grammar that describes a big chunk of the underlying language.
( z1 grammar :domain ( z2 grammar :mod ( z3 island ) ) :ARG0-of ( z4 describe :ARG1 ( z5 chunk :mod ( z6 big ) :part-of ( z7 language :ARG0-of ( z8 underlie ) ) ) ) )