The fleshy pome, or fruit, of a rosaceous tree (Pyrus communis), cultivated in many varieties in temperate climates; also, the tree which bears this fruit. See Pear family, below. [1913 Webster]

Pear blight. (a) (Bot.) A name of two distinct diseases of pear trees, both causing a destruction of the branches, viz., that caused by a minute insect (Xyleborus pyri), and that caused by the freezing of the sap in winter. A. J. Downing. (b) (Zoöl.) A very small beetle (Xyleborus pyri) whose larvæ bore in the twigs of pear trees and cause them to wither. -- Pear family (Bot.), a suborder of rosaceous plants (Pomeæ), characterized by the calyx tube becoming fleshy in fruit, and, combined with the ovaries, forming a pome. It includes the apple, pear, quince, service berry, and hawthorn. -- Pear gauge (Physics), a kind of gauge for measuring the exhaustion of an air-pump receiver; -- so called because consisting in part of a pear-shaped glass vessel. -- Pear shell (Zoöl.), any marine gastropod shell of the genus Pyrula, native of tropical seas; -- so called from the shape. -- Pear slug (Zoöl.), the larva of a sawfly which is very injurious to the foliage of the pear tree.

top

OXFORD DICTIONARY

pear, n.
1 a yellowish or brownish-green fleshy fruit, tapering towards the stalk.
2 any of various trees of the genus Pyrus bearing it, esp. P. communis.

Idiom

pear-drop a small sweet with the shape of a pear.

Etymology

OE pere, peru ult. f. L pirum

For further exploring for "pear" in Webster Dictionary Online