Champey (ចំប៉ា) is the Khmer (Cambodian) word for "frangipani" (Plumeria) — the fragrant white-yellow flower of Southeast Asian temples. From the Sanskrit campaka.
Champey is widely used in Cambodia. The national tree of Laos is the champey/champa.
Champey reduces to seven — the number of Khmer frangipani.