English to English

noun (n)

• a winged often one-seed indehiscent fruit as of the ash or elm or maple(noun.plant)

  Synonym:
  key, key fruit
  

  source: wordnet30
• A dry, indehiscent, usually one-seeded, winged fruit, as that of the ash, maple, and elm; a key or key fruit.(noun)

  source: webster1913