crab apple

Noun

• small sour apple; suitable for preserving
  • crabapples make a tangy jelly
    

• any of numerous wild apple trees usually with small acidic fruit

• any of numerous varieties of crab apples cultivated for their small acidic (usually bright red) fruit used for preserves or as ornamentals for their blossoms

Related words

• Synonyms: 
  crabapple , wild apple , cultivated crab apple