natural language

In the philosophy of language, a natural language (or ordinary language) is a language that is spoken, written, or signed (visually or tactilely) by humans for general-purpose communication, as distinguished from  formal languages  (such as computer-programming languages or the "languages" used in the study of formal logic, especially mathematical logic).
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<application> A language spoken or written by humans, as opposed to a language use to program or communicate with computers. Natural language understanding is one of the hardest problems of artificial intelligence due to the complexity, irregularity and diversity of human language and the philosophical problems of meaning.
See also Pleuk grammar development system, proof.
An on-line demonstration.
New York U.
(1995-04-24)

Noun
1. a human written or spoken language used by a community; opposed to e.g. a computer language
(synonym) tongue
(antonym) artificial language
(hypernym) language, linguistic communication
(hyponym) mother tongue, maternal language, first language