15-letter words containing s, e, t, r, w, o
- 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.
- white cast iron — cast iron having most or all of its carbon in the form of cementite and exhibiting a silvery fracture.
- white corpuscle — white blood cell.
- white snakeroot — a North American plant, Eupatorium urticaefolium, the roots or rhizomes of which have been used as a remedy for snakebite
- 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.
- with respect to — as regards
- without reserve — without reservations; fully; wholeheartedly
- 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
- wonder-stricken — struck or affected with wonder.
- worcester china — porcelain articles made in Worcester (England) from 1751 in a factory that became, in 1862, the Royal Worcester Porcelain Company
- worcester sauce — a commercially prepared piquant sauce, made from a basis of soy sauce, with vinegar, spices, etc
- working storage — the amount of memory used to temporarily store results or other data while a program is running.
- wrongful arrest — the act of arresting someone without proper reason