/skri-bəl/
n. 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 trash; compare mung, which conveys a bit more intention, and mangle, which is more violent and final.