any of various leguminous tendril-climbing plants of the genus Lathyrus, esp L. pratensis (meadow vetchling), mainly of N temperate regions, having winged or angled stems and showy flowers
See also sweet pea
vetchling in American English
(vɛtʃlɪŋ)
noun
any of a genus (Lathyrus) of tendril-climbing plants of the pea family