18-letter words containing s, a, b, t, r
- westinghouse brake — a railroad air brake operated by compressed air.
- white man's burden — the alleged duty of white colonizers to care for nonwhite indigenous subjects in their colonial possessions.
- whittaker chambers — Robert, 1802–71, Scottish publisher and editor.
- women's liberation — a movement to combat sexual discrimination and to gain full legal, economic, vocational, educational, and social rights and opportunities for women, equal to those of men.
- yerkes observatory — an astronomical observatory located in Williams Bay, Wisconsin, affiliated with the University of Chicago, and having a 40-inch (102-cm) refracting telescope, the largest refractor in the world.