Orchis spectabilis orc·hiss·pec·tabilis uncommon noun 1. North American orchid having a spike of violet-purple flowers mixed with white; sepals and petals form a hood Synonymsshowy orchispurple orchispurple-hooded orchisOrchis spectabilis Related words Broader terms orchis WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.