The Collaborative International Dictionary
cornua copiae
Cornucopia \Cor`nu*co"pi*a\ (k[^o]r`n[-u]*k[=o]"p[i^]*[.a]), n.; pl. Cornucopias (-[.a]z). [L. cornu copiae horn of plenty. See Horn, and Copious.]
The horn of plenty, from which fruits and flowers are represented as issuing. It is an emblem of abundance.
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pl. (Bot.) A genus of grasses bearing spikes of flowers resembling the cornucopia in form.
Note: Some writers maintain that this word should be written, in the singular, cornu copi[ae], and in the plural, cornua copi[ae].