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3 definitions found
 for Pear
From The Collaborative International Dictionary of English v.0.48 :

  Pear \Pear\ (p[^a]r), n. [OE. pere, AS. peru, L. pirum: cf. F.
     poire. Cf. Perry.] (Bot.)
     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) (Zool.) A very small beetle ({Xyleborus pyri) whose
         larv[ae] bore in the twigs of pear trees and cause them
         to wither.
  
     Pear family (Bot.), a suborder of rosaceous plants
        ({Pome[ae]), 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 (Zool.), any marine gastropod shell of the genus
        Pyrula, native of tropical seas; -- so called from the
        shape.
  
     Pear slug (Zool.), the larva of a sawfly which is very
        injurious to the foliage of the pear tree.
        [1913 Webster]
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

  pear
      n 1: sweet juicy gritty-textured fruit available in many
           varieties
      2: Old World tree having sweet gritty-textured juicy fruit;
         widely cultivated in many varieties [syn: pear, pear
         tree, Pyrus communis]

From V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016) :

  PEAR
         PHP Extension and Application Repository (PHP)
         

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