17-letter words containing t, o, w, a, l
- 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.
- 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
- wrangell-mountain — Mount, an active volcano in SE Alaska, in the Wrangell Mountains. 14,006 feet (4269 meters).
- 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.