Nonverbal communication by means of facial expressions, eye behavior, gestures, posture, and the like; often thought to be involuntary.

(computer languages) A programming language in which the source code of programs is composed of mnemonic instructions, each of which corresponds directly to a machine instruction for a particular processor.

Any language—whether a human language, a programming language, or markup language—that is not a natural language.

The first language one is taught to speak; one's native language. / The language one feels most comfortable and capable with. / Used other than figuratively or idiomatically: see first, language.

Any language descended from Latin.

(countable) One of several natural languages, typically used by the deaf, in which words consist of hand shapes, motions, positions, and facial expressions.

A language that is not widely or officially spoken in a particular place. / A language that is not one's native tongue.

(linguistics) A language which is reconstructed by examining similarities in existing languages to try to deduce what a common ancestor language, no longer known, would have been like.

(linguistics) a pidgin language

(linguistics, translation studies) The language from which a translation is done. / (computing) The language of the source code to be compiled.