Definition of pear apple in US English:

pear apple

noun

  • 1A fruit having features of both an apple and a pear; especially a rough-skinned variety of apple (now historical).

  • 2The fruit of a prickly pear (a cactus of the genus Opuntia).

  • 3Nashi.

Origin

Late Middle English; earliest use found in Promptorium Parvulorum.