a systematic means of communicating by the use of sounds or conventional symbols(noun.communication)
Example: He taught foreign languages.
The language introduced is standard throughout the text.
The speed with which a program can be executed depends on the language in which it is written.
Any means of conveying or communicating ideas; specifically, human speech; the expression of ideas by the voice; sounds, expressive of thought, articulated by the organs of the throat and mouth.(noun)
source: webster1913
verb (v)
To communicate by language; to express in language.(verb)