15-letter words containing l, u, p, i, n
- upper peninsula — a peninsula in the northern US between Lakes Superior and Michigan, constituting the N part of the state of Michigan
- upsetting lever — the horizontal distance between the center of gravity, acting downward, and the center of buoyancy, acting upward, when they are so placed as to form a couple (upsetting couple) tending to capsize the boat.
- uropygial gland — a gland opening on the back at the base of the tail in most birds that secretes an oily fluid used by the bird in preening its feathers.
- utility company — a company which supplies utilities, such as gas, electricity, phones, etc
- utopia planitia — Astronomy. a plain in the northern hemisphere of Mars that was the landing site of the Viking II space probe on September 3, 1976.
- venture capital — funds invested or available for investment in a new or unproven business enterprise.
- vincent de paul — Saint, 1576–1660, French Roman Catholic priest noted for his work to aid the poor.
- walpurgis night — (especially in medieval German folklore) the evening preceding the feast day of St. Walpurgis, when witches congregated, especially on the Brocken.
- washing-up bowl — plastic bowl used for washing dishes
- water pollution — the pollution of the sea and rivers
- whiplash injury — the lash of a whip.
- winter purslane — a plant, Montia perfoliata, native to western North America, of the purslane family, having edible, egg-shaped leaves and clusters of small, white flowers.
- yorke peninsula — a peninsula in S Australia between Spencer Gulf and the Gulf of St. Vincent. 160 miles (257 km) long and 20–35 miles (32–56 km) wide.