Meanings
proper noun
- A city in DuPage County and Cook County, Illinois, United States.
Origin
Named after a brook in the area with oaks along its banks. More on the name's history in Wikipedia at Oak Brook, Illinois § History.
Full word history & related roots →Cite this entry
APA
Oak Brook. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Oak%20Brook
MLA
“Oak Brook.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Oak%20Brook. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “Oak Brook,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Oak%20Brook.
Source: Oak Brook on Wiktionary, CC BY-SA 4.0.