17-letter words containing w, o, l, a
- well-woman clinic — a health-service clinic for preventive monitoring, health education, and advice for women
- welsh nationalism — the political belief that Wales should be independent
- welsh nationalist — a person who believes that Wales should be independent
- welshman's button — an angler's name for a species of caddis fly, Sericostoma personatum
- white-nationalism — white supremacy.
- wild sweet potato — man-of-the-earth.
- 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
- willow flycatcher — a North American flycatcher, Empidonax alnorum, of alder thickets and other moist areas, that has greenish-brown upper parts and whitish underparts and is almost indistinguishable except by voice from E. traillii (willow flycatcher)
- wind chill factor — A wind chill factor is a measure of the cooling effect of the wind on the temperature of the air.
- wind-chill factor — the apparent temperature felt on the exposed human body owing to the combination of temperature and wind speed.
- windowglass shell — capiz.
- wireless operator — a radio operator
- withdrawal method — a method of contraception in which the man withdraws his penis from the woman's vagina before ejaculation
- work-life balance — a situation in which one divides or balances one's time between work and activities outside of work: It's hard to achieve a reasonable work-life balance when you run your own business.
- 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 water lily — any of several water lilies, as the spatterdock, Nuphar luteum, having yellow flowers.
- yellowstone falls — a waterfall in NW Wyoming, in Yellowstone National Park on the Yellowstone River
- zebra swallowtail — a swallowtail butterfly, Papilio marcellus, having black and greenish-white stripes on the wings.