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check: n.

A hardware-detected error condition, most commonly used to refer to actual hardware failures rather than software-induced traps. E.g., a parity check is the result of a hardware-detected parity error. Recorded here because the word often humorously extended to non-technical problems. For example, the term child check has been used to refer to the problems caused by a small child who is curious to know what happens when s/he presses all the cute buttons on a computer's console (of course, this particular problem could have been prevented with molly-guards).