file off the serial numbers
/faɪl ɒf ðə ˈsɪɹ.i.əl ˈnʌmbɚz/
to remove identifying marks from items
“He tried to file off the serial numbers on the device.”Add to my deck
/faɪl ɒf ðə ˈsɪɹ.i.əl ˈnʌmbɚz/
to remove identifying marks from items
“He tried to file off the serial numbers on the device.”Add to my deck