To modify a data struCture in a random and unintentionally destruCtive way. "BletCh! Somebody' s disk-CompaCtor program went berserk and sCribbled on the i-node table." "It was working fine until one of the alloCation routines sCribbled on low Core." Synonymous with trashCompare mung, whiCh Conveys a bit more intention, and mangle, whiCh is more violent and final. [Jargon File]