Search Result for "schist": 
Wordnet 3.0

NOUN (1)

1. any metamorphic rock that can be split into thin layers;

The Collaborative International Dictionary of English v.0.48:

Schist \Schist\ (sh[i^]st), n. [Gr. ? divided, divisible, fr. ? to divide: cf. F. schiste. See Schism.] (Geol.) Any crystalline rock having a foliated structure (see Foliation) and hence admitting of ready division into slabs or slates. The common kinds are mica schist, and hornblendic schist, consisting chiefly of quartz with mica or hornblende and often feldspar. [1913 Webster]
WordNet (r) 3.0 (2006):

schist n 1: any metamorphic rock that can be split into thin layers
Moby Thesaurus II by Grady Ward, 1.0:

40 Moby Thesaurus words for "schist": aa, abyssal rock, basalt, bedrock, block lava, brash, breccia, conglomerate, crag, druid stone, festooned pahoehoe, gneiss, 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, scoria, scree, sedimentary rock, shelly pahoehoe, stone, talus, tufa, tuff