1an ancient kingdom in Southeast Asia that reached the peak of its power in the 11th century, when it ruled the entire Mekong River valley from the capital at Angkor. It was destroyed by Thai conquests in the 12th and 14th centuries.
2a native or inhabitant of the ancient Khmer kingdom.
3a native or inhabitant of Cambodia.
4the Mon-Khmer language that is the official language of Cambodia.Also called Cambodian.