The Collaborative International Dictionary
Cinnamon \Cin"na*mon\, n. [Heb. qinn[=a]m[=o]n; cf. Gr. ?, ?, cinnamomum, cinnamon. The Heb. word itself seems to have been borrowed from some other language; cf. Malay k[=a]j[=u] m[=a]nis sweet wood.]
The inner bark of the shoots of Cinnamomum Zeylanicum, a tree growing in Ceylon. It is aromatic, of a moderately pungent taste, and is one of the best cordial, carminative, and restorative spices.
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Cassia.
Cinnamon stone (Min.), a variety of garnet, of a cinnamon or hyacinth red color, sometimes used in jewelry.
Oil of cinnamon, a colorless aromatic oil obtained from cinnamon and cassia, and consisting essentially of cinnamic aldehyde, C6H5.C2H2.CHO.
Wild cinnamon. See Canella.
WordNet
Usage examples of "cinnamon stone".
Cordiner enumerates, as the production of Ceylon, the ruby, emerald, topaz, amethyst, sapphire, cats'-eye or opal, cinnamon stone or garnet, agate, sardonix, and some others.