n. a total jerk; a social outcast. (Also a term of address.) : Sam, you act like such a mutant!
Dictionary of American Slang and Colloquial Expressions by Richard A. Spears.Fourth Edition. Copyright 2007. Published by McGraw-Hill Education.
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programming Microsoft's term for a mutex which is generally used in user mode but can also be used in kernel mode. According to this terminology a mutex is only used in kernel mode. ["Microsoft Windows NT Workstation Resource Kit"]. (1997-07-30)