Lewis & Short

volaema pĭra, a kind of large pear, warden-pear, Cato, R. R. 7, 4; Col. 5, 10, 18; 12, 10, 4; Verg. G. 2, 88.
In sing.: pirum volaemum, Arat. ap. Macr. S. 2, 15 fin.