O'Fallon

proper noun

A surname from Irish.

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Meanings

proper nounO'Fallon (countable and uncountable, plural O'Fallons)

plural O'Fallons

  1. countableuncountableA surname from Irish.
  2. countableuncountableA city and township in St. Clair County, Illinois, United States.
  3. countableuncountableA city in St. Charles County, Missouri, United States.
  4. countableuncountableA neighbourhood of St. Louis, Missouri.

Origin

See Fallon.

Full word history & related roots →
Cite this entry
APA

O'Fallon. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/O'Fallon

MLA

“O'Fallon.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/O'Fallon. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “O'Fallon,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/O'Fallon.

Source: O'Fallon on Wiktionary, CC BY-SA 4.0.