The substitution of Middle English -o- for Old English -u- before -m-, -n-, or -r- was a scribal habit before minims to avoid misreading the letters in the old style handwriting, which jammed letters. The practice similarly transformed some, monk, tongue, worm.
Bellbrook is a city in Greene County, Ohio, United States. The population was 6,943 at the 2010 census. It is part of the Dayton Metropolitan Statistical Area.
Fallbrook is an unincorporated community in northern San Diego County, California. The Fallbrook census-designated place (CDP) population was 30,534 at the 2010 census, up from 29,100 at the 2000 census. Fallbrook's downtown is not on any major highway route. It is 6 miles (9.7 km) west of Interstate 15 or 5 miles (8.0 km) north of State Route 76. Fallbrook is situated immediately east of the U.S. Marine Corps' Camp Pendleton. It once housed a stagecoach stop for the stage that ran from Temecula to San Diego. Fallbrook is known for its avocado groves and claims the title Avocado Capital of the World.