What is language? What is language? Communication of thoughts and feelings through a system of arbitrary signals, such as voice sounds, gestures, or written symbols.Such a system including its rules for combining its components, such as words.Such a system as used by a nation, people, or other distinct community; often contrasted with dialect. A system of signs, symbols, gestures, or rules used in communicating: the language of algebra. Computer Science A system of symbols and rules used for communication with or between computers.Body language; kinesics.The special vocabulary and usages of a scientific, professional, or other group: "his total mastery of screen language—camera placement, editing—and his handling of actors” ( Jack Kroll). A characteristic style of speech or writing: Shakespearean language. A particular manner of expression: profane language; persuasive language. The manner or means of communication between living creatures other than humans: the language of dolphins. Verbal communication as a subject of study.The wording of a legal document or statute as distinct from the spirit.