pyrus noun. ['pʌɪrǝs] M19.
[medieval Latin var. of Latin pirus.]
Any of various small trees constituting the genus Pyrus, of the rose family; esp. the cultivated pear tree, P. communis. Also, any of various other trees and shrubs formerly included in this genus, esp. japonicas (genus Chaenomeles), and whitebeams and mountain ashes (genus Sorbus).

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