Pronunciation: (ub-struk'shun),[key] —n. 1. something that obstructs, blocks, or closes up with an obstacle or obstacles; obstacle or hindrance: obstructions to navigation. 2. an act or instance of obstructing.
3. the state of being obstructed.
4. the delaying or preventing of business before a deliberative body, esp. a legislative group, by parliamentary contrivances.