Laser engraving is the practice of using a laser cutter (see also: laser cutter) to engrave an object.
The technique does not involve the use of inks, nor does it involve tool bits which contact the engraving surface and wear out. These properties distinguish laser engraving from alternative engraving or marking technologies where inks or bit heads have to be replaced regularly.
Examples on Superuse.org
Examples on Harvestmap.org