Hypertext Webster Gateway: "Pyrena"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Pyrena \Py*re"na\, n.; pl. {Pyren[ae]}. [NL., fr. Gr. ?, the
stone of fruit.] (Bot.)
A nutlet resembling a seed, or the kernel of a drupe. --Gray.
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