WordNet (r) 3.0 (2006):

Jamaica sorrel
    n 1: East Indian sparsely prickly annual herb or perennial
         subshrub widely cultivated for its fleshy calyxes used in
         tarts and jelly and for its bast fiber [syn: roselle,
         rozelle, sorrel, red sorrel, Jamaica sorrel,
         Hibiscus sabdariffa]