17-letter words containing w, i, p, n
- spanish civil war — the civil war in Spain 1936–39.
- spin one's wheels — a circular frame or disk arranged to revolve on an axis, as on or in vehicles or machinery.
- spiny-headed worm — any of a small group of endoparasites of the phylum Acanthocephala, as larvae parasitic in insects and crustaceans and as adults in various vertebrates.
- spread your wings — if you spread your wings, you do something new and rather difficult or move to a new place, because you feel more confident in your abilities than you used to and you want to gain wider experience
- spring cankerworm — the striped, green caterpillar of any of several geometrid moths: a foliage pest of various fruit and shade trees, as Paleacrita vernata (spring cankerworm) and Alsophila pometaria (fall cankerworm)
- top-security wing — a wing of a prison, mental hospital, etc that has a very high level of precautions against escape
- walk-in apartment — a ground-floor apartment having a private entrance directly from the street, rather than through a hallway of the building.
- washing-up liquid — Washing-up liquid is a thick soapy liquid which you add to hot water to clean dirty dishes.
- weapons inspector — a person who inspects a country's weapons
- wedding reception — party after a marriage
- weeping lovegrass — any grass of the genus Eragrostis, as E. curvula (weeping lovegrass) and E. trichodes (sand lovegrass) cultivated as forage and ground cover.
- well-proportioned — adjusted to proper proportion or relation.
- white-pine weevil — a brown beetle, Pissodes strobi, the larvae of which feed on the terminal buds and shoots of white pine and other conifers.
- winter heliotrope — a creeping perennial, Petasites fragrans, related to the butterbur, having lilac to heliotrope-coloured flowers smelling of vanilla: found chiefly on road verges
- without exception — all included