20-letter words containing s, t, a, u, e, o
- western mountain ash — a mountain ash, Sorbus sitchensis, of western North America.
- white bush (scallop) — a variety of summer squash having a saucer-shaped white fruit, scalloped around the edges
- woman of easy virtue — a sexually available woman, esp a prostitute
- worcestershire sauce — a sharp sauce made with soy, vinegar, spices, etc., originally made in Worcester, England.