From 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]