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Expressions that do not belong to standard written English. For example, “flipping out” is slang for “losing one's mind” or “losing one's temper.” Slang expressions are usually inappropriate in formal speech or writing. (See jargon.)
A style or register of language consisting of terms that can be substituted for standard terms of the same conceptual meaning but having stronger emotive impact than the standard terms, in order to express an attitude of self-assertion toward conventional order and moral authority and often an affinity with or membership in occupational, ethnic, or other social groups, and ranging in acceptability from sexual and scatological crudity to audacious wittiness (see Preface)
[mid-1700s+ British; origin unknown; probably related to sling, which has cognates in Norwegian that suggest the abusive nature of slang; the British dialect original term slang meant both ''a kind of projectile-hurling weapon'' and ''the language of thieves and vagabonds,'' reinforcing the connection with ''sling'']
1. R.A. Sibley. CACM 4(1):75-84 (Jan 1961).
2. Set LANGuage. Jastrzebowski, ca 1990. C extension with set-theoretic data types and garbage collection. "The SLANG Programming Language Reference Manual, Version 3.3", W. Jastrzebowski
3. Structured LANGuage. Michael Kessler, IBM. A language based on structured programming macros for IBM 370 assembly language. "Project RMAG: SLANG (Structured Language) Compiler", R.A. Magnuson, NIH-DCRT-DMB-SSS-UG105, NIH, DHEW, Bethesda, MD 20205 (1980).
4. "SLANG: A Problem Solving Language for Continuous-Model Simulation and Optimisation", J.M. Thames, Proc 24th ACM Natl Conf 1969.