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Webster 1913 Edition

Noun.

[L.

novacula

a sharp knife, razor: cf. F.

novaculite

(Min.)

A variety of siliceous slate, of which hones are made; razor stone; Turkey stone; hone stone; whet slate.

Noun.

[L. a razor.] Razor-stone; Turkey-hone; coticular shist; whet-slate, a variety of argillaceous slate.

novaculite ‎(plural novaculites)

(geology, mineralogy) A variety of chert, very rich in quartz, that has been used to make whetstones