any chiefly American climbing vine or shrub of the genus Passiflora, having showy flowers and a pulpy berry or fruit that in some species is edible.
Origin: 1605–15; trans. of NL flōs passiōnis flower of the Passion; so named because the parts of the flower were imagined as symbolic of the objects and events of Christ's Passion
pas·sion·flow·er (pāsh'ən-flou'ər) n. Any of various climbing, tendril-bearing, chiefly tropical American vines of the genus Passiflora, having large showy flowers with a fringelike crown and a conspicuous stalk that bears the stamens and pistil.
[From the resemblance of its parts to the instruments of the Passion.]