abounding in rocks or stones

causing or characterized by jolts and irregular movements

liable to rock

full of hardship or trials

United States prizefighter who won the world heavyweight championship in 1952 (1924-1969)

plant of western North America having trifoliate leaves and white or pink spider-shaped flowers; sometimes used as an ornamental

wild sheep of mountainous regions of western North America having massive curled horns

small slow-growing upland pine of western United States (Rocky Mountains) having dense branches with fissured rust-brown bark and short needles in bunches of 5 and thorn-tipped cone scales; among the oldest living things some over 4500 years old

North American plant similar to common dogbane

sure-footed mammal of mountainous northwestern North America

a Canada jay with a white head; widely distributed from Montana to Arizona

a national park in Colorado having mountains and lakes and streams and forests

small compact two-needled pinon of southwestern United States; important as a nut pine

wild sheep of mountainous regions of western North America having massive curled horns

caused by rickettsial bacteria and transmitted by wood ticks

whitefish of the western United States and Canada

the chief mountain range of western North America; extends from British Columbia to northern New Mexico; forms the continental divide

dwarf ornamental shrub of western United States having large black to red and yellow sweet edible fruit

small maple of northwestern North America