Trap-rock

  • 1Trap rock — is a form of plutonic igneous rock that tends to form polygonal vertical fractures, most typically hexagonal, but also four to eight sided. The fracture pattern forms when magma of suitable chemical composition (typically basaltic) intrudes as a… …

    Wikipedia

  • 2trap rock — Trap Trap, n. [Sw. trapp; akin to trappa stairs, Dan. trappe, G. treppe, D. trap; so called because the rocks of this class often occur in large, tabular masses, rising above one another, like steps. See {Tramp}.] (Geol.) An old term rather… …

    The Collaborative International Dictionary of English

  • 3trap|rock — «TRAP ROK», noun. = trap3. (Cf. ↑trap) …

    Useful english dictionary

  • 4trap rock — n. TRAP2 * * * …

    Universalium

  • 5trap rock — n. TRAP2 …

    English World dictionary

  • 6Trap — Trap, n. [Sw. trapp; akin to trappa stairs, Dan. trappe, G. treppe, D. trap; so called because the rocks of this class often occur in large, tabular masses, rising above one another, like steps. See {Tramp}.] (Geol.) An old term rather loosely… …

    The Collaborative International Dictionary of English

  • 7Trap tufa — Trap Trap, n. [Sw. trapp; akin to trappa stairs, Dan. trappe, G. treppe, D. trap; so called because the rocks of this class often occur in large, tabular masses, rising above one another, like steps. See {Tramp}.] (Geol.) An old term rather… …

    The Collaborative International Dictionary of English

  • 8Trap tuff — Trap Trap, n. [Sw. trapp; akin to trappa stairs, Dan. trappe, G. treppe, D. trap; so called because the rocks of this class often occur in large, tabular masses, rising above one another, like steps. See {Tramp}.] (Geol.) An old term rather… …

    The Collaborative International Dictionary of English

  • 9Trap — Trap, a. Of or pertaining to trap rock; as, a trap dike. [1913 Webster] …

    The Collaborative International Dictionary of English

  • 10trap — 1. n. & v. n. 1 a an enclosure or device, often baited, for catching animals, usu. by affording a way in but not a way out. b a device with bait for killing vermin, esp. = MOUSETRAP. 2 a trick betraying a person into speech or an act (is this… …

    Useful english dictionary