Meanings
proper noun
- One of 3 counties in Delaware, United States. Seat: Wilmington.
Origin
Named after Newcastle (Newcastle upon Tyne), England.
Full word history & related roots →Cite this entry
APA
New Castle County. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/New%20Castle%20County
MLA
“New Castle County.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/New%20Castle%20County. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “New Castle County,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/New%20Castle%20County.
Source: New Castle County on Wiktionary, CC BY-SA 4.0.