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Webster 1913 Edition

Adj.

Easily breaking into pieces; not compact; loose of texture; brittle;

as,

shattery

spar

Adj.

Brittle; easily falling into many pieces; not compact; loose of texture; as shattery spar.

shattery ‎(comparative more shattery, superlative most shattery)

Easily breaking into pieces; not compact; loose of texture; brittle.
shattery spar