The Collaborative International Dictionary of English v.0.48:
Wineberry \Wine"ber`ry\, n. (Bot.) (a) The red currant. (b) The bilberry. (c) A peculiar New Zealand shrub (Coriaria ruscifolia), in which the petals ripen and afford an abundant purple juice from which a kind of wine is made. The plant also grows in Chili. [1913 Webster]