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    rock
    /rɒk/

    noun

    • 1. the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil: "the beds of rock are slightly tilted"
    • 2. a large piece of rock which has become detached from a cliff or mountain; a boulder: "the stream flowed through a jumble of rocks"

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  2. www.merriam-webster.com › dictionary › rockRock Definition & Meaning - Merriam-Webster

    The meaning of ROCK is to move back and forth in or as if in a cradle. How to use rock in a sentence. Synonym Discussion of Rock.

  3. www.britannica.com › science › rock-geologyRock | Definition, Characteristics, Formation, Cycle,...

    Jun 18, 2024 · Rock, in geology, naturally occurring and coherent aggregate of one or more minerals. Such aggregates constitute the basic unit of which the solid Earth is composed and typically form recognizable and mappable volumes. The three major classes of rock are igneous, sedimentary, and metamorphic rock.

  4. dictionary.cambridge.org › dictionary › englishROCK | English meaning - Cambridge Dictionary

    ROCK definition: 1. the dry solid part of the earth's surface, or any large piece of this that sticks up out of the…. Learn more.

  5. www.dictionary.com › browse › rockROCK Definition & Meaning | Dictionary.com

    A relatively hard, naturally occurring mineral material. Rock can consist of a single mineral or of several minerals that are either tightly compacted or held together by a cementlike mineral matrix. The three main types of rock are igneous, sedimentary, and metamorphic.

  6. www.collinsdictionary.com › dictionary › englishROCK definition and meaning | Collins English Dictionary

    A rock is a large piece of rock that sticks up out of the ground or the sea, or that has broken away from a mountain or a cliff. She sat cross-legged on the rock. ...the sound of the sea crashing against the rocks.

  7. www.britannica.com › art › rock-musicRock | Definition, History, Artists, Songs, & Facts | Britannica

    Jul 2, 2024 · Rock music is a form of popular music that emerged in the 1950s and can be defined as “a form of music with a strong beat”—it is difficult to be much more precise. It is also called rock and roll.

  8. dictionary.cambridge.org › dictionary › learner-englishROCK | meaning - Cambridge Learner's Dictionary

    ROCK definition: 1. the hard, natural substance that forms part of the Earth's surface: 2. a large piece of rock or…. Learn more.

  9. www.thefreedictionary.com › rockRock - definition of rock by The Free Dictionary

    n. 1. Relatively hard, naturally formed mineral or petrified matter; stone. 2. a. A relatively small piece or fragment of such material. b. A relatively large body of such material, as a cliff or peak. 3. A naturally formed aggregate of mineral matter constituting a significant part of the earth's crust. 4.

  10. www.britannica.com › dictionary › rockRock Definition & Meaning | Britannica Dictionary

    Britannica Dictionary definition of ROCK. 1. : to move (someone or something) back and forth or from side to side. [+ object] She gently rocked the baby to sleep. Waves rocked the boat. [no object] He rocked back and forth while he stood waiting. The boat rocked back and forth on the waves. 2. [+ object] : to cause (something) to shake violently.

  11. www.vocabulary.com › dictionary › rockRock - Definition, Meaning & Synonyms | Vocabulary.com

    noun. material consisting of the aggregate of minerals like those making up the Earth's crust. “that mountain is solid rock ” synonyms: stone. see more. noun. a lump or mass of hard consolidated mineral matter. “he threw a rock at me” synonyms: stone. see more. noun. (figurative) someone who is strong and stable and dependable.