scratch: 1. [from `scratchpad'] adj. Describes a data structure
or recording medium attached to a machine for testing or
temporary-use purposes; one that can be scribbled on without loss.
Usually in the combining forms `scratch memory', `scratch
register', `scratch disk', `scratch tape', `scratch volume'. See
also scratch monkey. 2. [primarily IBM] vt. To delete (as in a
file).
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