- 1st Duke of. Pelham-Holles, Thomas.
- Also called New·cas·tle-up·on-Tyne [noo-kas-uh l-uh-pon-tahyn, –uh-pawn-, -kah-suh l-, nyoo-] /ˈnuˌkæs əl əˌpɒnˈtaɪn, -əˌpɔn-, -ˌkɑ səl-, ˈnyu-/. a seaport in Tyne and Wear, in NE England, on the Tyne River: shipbuilding; major coal center.
- a seaport in E New South Wales, in SE Australia.
- a town in SE Ontario, in S Canada, NE of Toronto, on Lake Ontario.
- carry coals to Newcastle,
- to take something to a place where its kind exists in great quantity.
- to do something wholly unnecessary.
- a port in SE Australia, in E New South Wales near the mouth of the Hunter River: important industrial centre, with extensive steel, metalworking, engineering, shipbuilding, and chemical industries. It suffered Australia’s first recorded fatal earthquake, in 1989. Pop: 279 975 (2001)
- Duke of, the title of Thomas Pelham Holles. 1693–1768, English Whig prime minister (1754–56; 1757–62): brother of Henry Pelham
see carry coals to Newcastle.