New Castle

US: (no̅o̅′kas′əl, -kä′səl, nyo̅o̅′-)

WordReference Random House Unabridged Dictionary of American English © 2026

New′ Cas′tle, 

1. Place Names a city in W Pennsylvania. 33,621.
2. Place Names a city in E Indiana. 20,056.

New•cas•tle  (no̅o̅′kas′əl, -kä′səl, nyo̅o̅′-), n. 

1. Biographical 1st Duke of. See Pelham-Holles, Thomas. 
Also called New•cas•tle-up•on-Tyne  (no̅o̅′kas′əl ə pon′tīn′, -ə pôn′-, -kä′səl-, nyo̅o̅′-). a seaport in Tyne and Wear, in NE England, on the Tyne River: shipbuilding;
major coal center. 295,700.
2. Place Names a seaport in E New South Wales, in SE Australia. 146,900.
3. Place Names a town in SE Ontario, in S Canada, NE of Toronto, on Lake Ontario. 32,229.
4. Idioms carry coals to Newcastle:
   • to take something to a place where its kind exists in great quantity.
   • to do something wholly unnecessary.