15-letter words containing s, w, i, a
- washington palm — a palm tree, Washingtonia filifera, of California and Florida, having large fan-shaped leaves and small black fruits
- water-resistant — resisting though not entirely preventing the penetration of water.
- weapons carrier — a light truck for transporting weapons or munitions in the field.
- weather station — an installation equipped and used for meteorological observation.
- welfare statism — the belief in or practices of a welfare state.
- well-advertised — to announce or praise (a product, service, etc.) in some public medium of communication in order to induce people to buy or use it: to advertise a new brand of toothpaste.
- wernicke's area — a portion of the left posterior temporal lobe of the brain, involved in the ability to understand words.
- westphalian ham — a hard German ham with a distinctive flavor derived from being smoked over beechwood and juniper.
- whaling station — a place where the carcases of whales were processed
- what's cooking? — what's happening?
- what's-his-name — man: forgotten name
- whatshumacallit — Alternative form of whatchamacallit.
- wheelchair user — a person who is unable to walk through injury, illness, etc and relies on a wheelchair to move around
- whip into shape — to bring by vigorous action into the proper or desired condition
- whiplash injury — the lash of a whip.
- whippersnappers — Plural form of whippersnapper.
- white cast iron — cast iron having most or all of its carbon in the form of cementite and exhibiting a silvery fracture.
- white christmas — A white Christmas is a Christmas when it snows.
- white mountains — a mountain range in the US, chiefly in N New Hampshire: part of the Appalachians. Highest peak: Mount Washington, 1917 m (6288 ft)
- white snakeroot — a North American plant, Eupatorium urticaefolium, the roots or rhizomes of which have been used as a remedy for snakebite
- white supremacy — the belief, theory, or doctrine that white people are inherently superior to people from all other racial groups, especially black people, and are therefore rightfully the dominant group in any society.
- wide-angle lens — A wide-angle lens is a lens which allows you to photograph a wider view than a normal lens.
- wiener neustadt — a city in E Austria, in Lower Austria. Pop: 37 627 (2002)
- wild strawberry — uncultivated plant bearing red fruit
- wilderness area — a region whose natural growth is protected by legislation and whose recreational and industrial use is restricted.
- 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.
- william webster — Daniel, 1782–1852, U.S. statesman and orator.
- winter holidays — a period of rest from work or studies taken in winter
- winter purslane — a plant, Montia perfoliata, native to western North America, of the purslane family, having edible, egg-shaped leaves and clusters of small, white flowers.
- winter quarters — housing or accommodation for the winter, esp for military personnel
- witch of agnesi — a plane curve symmetrical about the y- axis and asymptotic to the x- axis, given by the equation x 2 y =4 a 2 (2 a − y).
- withdrawal slip — a small paper form which has to be filled in before making a withdrawal of money from a bank, building society, etc
- wittgensteinian — Ludwig (Josef Johann) [loot-vikh yoh-zef yoh-hahn,, lood-] /ˈlut vɪx ˈyoʊ zɛf ˈyoʊ hɑn,, ˈlud-/ (Show IPA), 1889–1951, Austrian philosopher.
- wolverine state — Michigan (used as a nickname).
- worcester china — porcelain articles made in Worcester (England) from 1751 in a factory that became, in 1862, the Royal Worcester Porcelain Company
- working storage — the amount of memory used to temporarily store results or other data while a program is running.
- wrestling match — sport: contention by grappling opponent
- yellow goatfish — a schooling goatfish, Mulloidichthys martinicus, inhabiting the Atlantic Ocean from Florida to Panama.