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|Noun||1.||head crash - (computer science) a crash of a read/write head in a hard disk drive (usually caused by contact of the head with the surface of the magnetic disk)|
computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures
crash - (computer science) an event that causes a computer system to become inoperative; "the crash occurred during a thunderstorm and the system has been down ever since"