sac·co·la·bi·um \ˌsakōˈlābēəm\noun Etymology: New Latin, from sacc- + labium 1.capitalized: a genus of epiphytic orchids of the East Indies and the Malay archipelago having racemose flowers with a flat spreading perianth and a lip with a saccate base 2.pluralsac·cola·bia\-ēə\orsaccolabiums: any plant or flower of the genus Saccolabium