pĭrus, i, f.,
a pear-tree : insere nunc, Meliboee, piros, Verg. E. 1, 74; Plin. 16, 24, 38, § 90; 16, 26, 46, § 109; 16, 25, 42, § 103: felix arbor, Macr. S. 3, 20, 2.
PIRUS or PEIRUS. [ACHAIA13b.] ...
Dictionary of Greek and Roman Geography
pirus ī, f a pear-tree: insere piros, V. ...
An Elementary Latin Dictionary