- obstruction, obstructor, obstructer, impediment, impedimenta - any structure that makes progress difficult
--1 is a kind of structure, construction
--1 has particulars:bar; barrier; blockade; blockage, block, closure, occlusion, stop, stoppage; hindrance, hitch, preventive, preventative, encumbrance, incumbrance, interference; obstacle; tumbler - impedimenta - the baggage and equipment carried by an army
--2 is a kind of baggage, luggage