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Webster 1913 Edition

Noun.

(Min.)

One of the varieties of calcite, barite, and feldspar, which emit a fetid odor on being struck; – called also

swinestone

Noun.

Swinestone, a variety of compact lucullite; a subspecies of limestone.

stinkstone ‎(plural stinkstones)

(mineralogy) One of the varieties of calcite, barite, and feldspar, which emit a foetid odour on being struck.