15-letter words containing p, u, i, r
- utility program — system software used to perform standard operations, as sorting data or copying data from one file to another, for application programs or other system software.
- venture capital — funds invested or available for investment in a new or unproven business enterprise.
- vicar capitular — a cleric chosen by a cathedral chapter to manage a bishopric during a vacancy.
- viper's bugloss — the blueweed.
- wallpaper music — music that is pleasant but not interesting, so people do not pay much attention to it
- walpurgis night — (especially in medieval German folklore) the evening preceding the feast day of St. Walpurgis, when witches congregated, especially on the Brocken.
- water pollution — the pollution of the sea and rivers
- weimar republic — the German republic (1919–33), founded at Weimar.
- western juniper — a round-headed tree, Juniperus occidentalis, of the western coast of the U.S., having scalelike leaves with a gland on the back and oval, blue-black fruit.
- whiplash injury — the lash of a whip.
- white corpuscle — white blood cell.
- white supremacy — the belief, theory, or doctrine that white people are inherently superior to people from all other racial groups, especially black people, and are therefore rightfully the dominant group in any society.
- win one's spurs — a U -shaped device that slips over and straps to the heel of a boot and has a blunt, pointed, or roweled projection at the back for use by a mounted rider to urge a horse forward.
- 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.
- wood turpentine — turpentine obtained from pine trees.
- 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.