Yard-long Bean Definition

yärdlông, -lŏng
noun
A type of cowpea (Vigna unguiculata subsp. sesquipedalis) native to southern Asia, having drooping pods that can grow up to a yard long and are eaten as a vegetable.
American Heritage
Synonyms:
  • Vigna sesquipedalis
  • Vigna unguiculata sesquipedalis
  • asparagus bean