English Words Starting With R

• rockwell number

  nounLow in everyday language; high in technical contexts.
  /ˈrɒkwɛl ˈnʌmbə/A numerical value on the Rockwell scale that indicates the hardness of a material.
• rockwork

  nounC2
  /ˈrɒk.wɜːk/A natural or artificial mass or arrangement of rocks, as in a garden or on a mountainside.
• rocky hill

  nounC1 (Upper Intermediate)
  /ˌrɒki ˈhɪl/A natural elevation of the earth's surface that is composed primarily of rock or stones, typically with a discernible summit and slopes.
• rocky mount

  nounLow (as a common noun phrase); Medium-High (as a proper noun for specific locations).
  /ˌrɒki ˈmaʊnt/A mountain or hill with a rugged, stony surface; a prominent elevation characterized by exposed rock.
• rocky mountain beeplant

  nounC2
  /ˌrɒki ˌmaʊntɪn ˈbiːplɑːnt/A wild flowering plant (Cleome serrulata) native to western North America, known for attracting pollinators like bees with its pink or purple flower clusters.
• rocky mountain bighorn

  nounC2
  /ˌrɒki ˌmaʊntɪn ˈbɪɡhɔːn/A subspecies of wild sheep (Ovis canadensis) native to the Rocky Mountains of North America, characterized by large, curved horns.
• rocky mountain flowering raspberry

  nounVery low (specialist/botanical term)
  /ˌrɒki ˈmaʊntɪn ˈflaʊərɪŋ ˈrɑːzb(ə)ri/A wild, non-thorny shrub native to western North America, producing edible red berries and pinkish flowers.
• rocky mountain goat

  nounLow
  /ˌrɒki ˈmaʊntɪn ɡəʊt/The common name for Oreamnos americanus, a large-hoofed mammal native to the steep, rugged terrain of the Rocky Mountains and other mountain ranges of northwestern North America.
• rocky mountain juniper

  nounC2 (Very low frequency in general English; limited to specific contexts)
  /ˌrɒki ˈmaʊntɪn ˈdʒuːnɪpə/A specific species of coniferous tree native to western North America, scientifically named Juniperus scopulorum.
• rocky mountain locust

  nounLow
  /ˌrɒki ˈmaʊntɪn ˈləʊkəst/A species of locust (Melanoplus spretus), now extinct, that was endemic to North America and historically known for massive, devastating swarms in the 19th century.
• rocky mountain national park

  nounLow (Proper noun, specific place)
  /ˌrɒki ˈmaʊntɪn ˌnæʃnəl ˈpɑːk/A specific national park located in the Rocky Mountains of Colorado, USA, protected and managed for conservation and public enjoyment.
• rocky mountain oyster

  nounLow (specialized/regional culinary term)
  /ˌrɒki ˌmaʊntɪn ˈɔɪstə/A culinary dish consisting of the testicles of a bull, calf, or other male animal, typically breaded and fried.
• rocky mountain sheep

  nounC2
  /ˌrɒk.i ˈmaʊn.tɪn ˌʃiːp/A wild sheep species (Ovis canadensis) native to the mountain ranges of western North America, characterized by large, curved horns in males.
• rocky mountain spotted fever

  nounLow
  /ˌrɒki ˌmaʊntɪn ˈspɒtɪd ˈfiːvə/A serious, potentially fatal bacterial disease transmitted by tick bites, characterized by fever, headache, muscle pain, and a distinctive spotted rash.
• rocky mountain states

  plural-nounC1
  /ˌrɒki ˈmaʊntɪn steɪts/A geographic and cultural region of the United States comprising the states through which the Rocky Mountain range runs.
• rocky mountain whitefish

  nounLow
  /ˌrɒki ˈmaʊntɪn ˈwaɪtfɪʃ/A freshwater fish species (Prosopium williamsoni) native to cold rivers and lakes of the Rocky Mountains in North America.
• rocky mountains

  plural-nounB2
  /ˌrɒki ˈmaʊntɪnz/A major mountain range in western North America, extending from Canada to the southwestern United States.
• rocky river

  nounLow/Medium (as a common noun), High (as a proper noun/place name)
  /ˈrɒki ˈrɪvə/A river flowing over or through a bed of rocks or boulders.
• rococo

  adjectivenounLow
  /rəˈkəʊ.kəʊ/A highly ornate and elaborate style of architecture, art, music, or literature that developed in 18th-century Europe from the earlier Baroque style, characterized by lightness, elegance, and playful use of curves, scrolls, shells, and foliage.
• rod

  nounverb-transitiveB1
  /rɒd/A thin straight bar or stick, often made of wood, metal, or another rigid material.

Showing 4461–4480 of 5802 words.