gneiss

gneiss
    n 1: a laminated metamorphic rock similar to granite
    

Gneiss \Gneiss\ (n[imac]s), n. [G.] (Geol.)
   A crystalline rock, consisting, like granite, of quartz,
   feldspar, and mica, but having these materials, especially
   the mica, arranged in planes, so that it breaks rather easily
   into coarse slabs or flags. Hornblende sometimes takes the
   place of the mica, and it is then called {hornblendic gneiss}
   or {syenitic gneiss}. Similar varieties of related rocks are
   also called gneiss.
   [1913 Webster]
    

40 Moby Thesaurus words for "gneiss":
      aa, abyssal rock, basalt, bedrock, block lava, brash, breccia,
      conglomerate, crag, druid stone, festooned pahoehoe, granite,
      igneous rock, lava, limestone, living rock, magma, mantlerock,
      metamorphic rock, monolith, pahoehoe, pillow lava, porphyry,
      pudding stone, regolith, rock, ropy lava, rubble, rubblestone,
      sandstone, sarsen, schist, scoria, scree, sedimentary rock,
      shelly pahoehoe, stone, talus, tufa, tuff