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Noun: graywacke
Usage: N. Amer (elsewhere: greywacke)
  1. Hard dark-colored sandstone with poorly sorted angular grains of quartz, feldspar, and small rock fragments in a compact, clay-fine matrix
    - greywacke

Derived forms: graywackes

Encyclopedia: Graywacke

Nearest

grayish-pink
grayish-white
graylag
graylag goose
gray-leaf pine
grayling
grayly
grayness
gray-pink
grayscale
graywacke
gray-white
Graz
graze
grazed
grazer
grazier
grazing
grazing fire
grazing land
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