15-letter words containing r, o, s, e, l
- waterford glass — fine cut or gilded glass made in Waterford, Ireland, having a slight blue cast due to the presence of cobalt.
- wee small hours — the hours just after midnight
- well-considered — thought about or decided upon with care: a considered opinion.
- well-formedness — rightly or pleasingly formed: a well-formed contour.
- well-understood — simple past tense and past participle of understand.
- wentworth scale — a scale for specifying the sizes (diameters) of sedimentary particles, ranging from clay particles (less than 1⁄256 mm) to boulders (over 256 mm)
- west carrollton — a town in W Ohio.
- west hartlepool — a former borough, now part of Hartlepool, in Cleveland County, in NE England, at the mouth of the Tees.
- western hemlock — a tall, narrow hemlock, Tsuga heterophylla, of western North America: the state tree of Washington.
- where one lives — in one's sensitive or defenceless position
- white corpuscle — white blood cell.
- wilderness road — a 300-mile (500-km) route from eastern Virginia through the Cumberland Gap into Kentucky, explored by Daniel Boone in 1769 and marked as a trail by him and other pioneers in 1775: a major route for early settlers moving west.
- wilson's petrel — a small petrel, Oceanites oceanicus, that breeds in the Southern Hemisphere but ranges into the North Atlantic and Pacific oceans.
- winter holidays — a period of rest from work or studies taken in winter
- winter solstice — the solstice on or about December 21st that marks the beginning of winter in the Northern Hemisphere.
- wolf-rayet star — a very hot (35,000–100,000 K) and luminous star in the early stages of evolution, with broad emission lines in its spectrum.
- wolverine state — Michigan (used as a nickname).
- women's shelter — woman's refuge
- work oneself up — become overwrought
- wrongful arrest — the act of arresting someone without proper reason
- xenotransplants — Plural form of xenotransplant.
- yorke peninsula — a peninsula in S Australia between Spencer Gulf and the Gulf of St. Vincent. 160 miles (257 km) long and 20–35 miles (32–56 km) wide.
- yorkshire dales — the valleys of the rivers flowing from the Pennines in W Yorkshire: chiefly Ribblesdale, Swaledale, Nidderdale, Wharfedale, and Wensleydale; tourist area
- zermelo's axiom — axiom of choice.