"nymph of Muslim paradise," 1737, from French houri (1650s), from Persian huri "nymph in Paradise," from Arabic haura "to be beautifully dark-eyed," like a gazelle + -i, Persian formative element denoting the singular.
hound-dog
houndstooth
houp-la
hour
hourglass
houri
hourlong
hourly
house
houseboat
housebreak