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 scratch monkey.

2. [primarily IBM] vt. To delete (as in a file).