17-letter words containing m, e, l, o, w
- welshman's button — an angler's name for a species of caddis fly, Sericostoma personatum
- whistler's mother — (formal name, Arrangement in Gray and Black No. 1: Portrait of the Artist's Mother) a painting (1871) by James McNeill Whistler.
- white-nationalism — white supremacy.
- william shoemaker — William Lee ("Willie") 1931–2003, U.S. jockey.
- williams syndrome — an abnormality in the genes involved in calcium metabolism, resulting in learning difficulties
- wish someone well — to wish success or good fortune for someone
- withdrawal method — a method of contraception in which the man withdraws his penis from the woman's vagina before ejaculation
- wrangell-mountain — Mount, an active volcano in SE Alaska, in the Wrangell Mountains. 14,006 feet (4269 meters).
- yellow journalism — a color like that of egg yolk, ripe lemons, etc.; the primary color between green and orange in the visible spectrum, an effect of light with a wavelength between 570 and 590 nm.
- yellow-eye mullet — an edible mullet, Aldrichetta forsteri, found in coastal waters of New Zealand and Australia